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On September 17th, 1787 29 out of 55 delegates signed the new document. The constitution is important because it ensures those who make public decisions fairly represent the public opinion. Slavery was the main cause of the civil war and the constitution had affect on that because the constitution was the end to slavery. In the 13th amendment it called for the abolishment of slavery.

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This event happened in 1787, the constitution was being written the Northwest Ordinance had banned slavery In the New Western Territory. This is an important event in the 29th century because the Northwest Ordinance protected the civil liberties and outlawed slavery for the new territories. This lead to the civil war because it was the process for territories to become states and was an anti-slavery policy which was part of the civil war and was something that lead to the civil war.

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In South the invention of the Cotton Gin happened in 1793 which had made Cotton a major industry and need for enslaves labor. This was a key event of the 19th century because it revolutionize the production of cotton by speeding up the process of removing seeds from cotton fiber. This lead to the civil war because they needed more slaves to grow the cotton and slave ownership became a big issue that then lead to the civil war.

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In 1803 Jefferson had made Lewis the commander of an expedition to explore the American Territory and newly acquired Louisiana Purchase. His military service, along with many skills he had made him a good choice. He explored the Frontier. He made a big impact on changing America by exploring unmapped territory. The Louisiana Purchase was one of the leading causes for the civil war and Meriwether Lewis had been apart of exploring that territory so therefore he was part of the civil war in some way.

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In 1804 Meriwether Lewis and William Clark set off from St. Louis Missouri with the corps of discovery group and they went to explore the Louisiana territory. This was a key event of the 19th century because they had explored lands west of the Mississippi river that compromised the Louisiana Purchase. This lead to the civil war because the Louisiana territory was part of the war in which they had discovered that land.

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The transatlantic slave trade was trade involved with slave traders of many African people and this act was banned by the slave trade clause until 1807 when it was unbanned. This was a key event of the 19th century because it helped increase the slave trade and made slavery possible. This event lead to the civil war because tribes were engaging in the trade of these enslaved people that lead to violence and that then lead to the starting of the civil war. Something that also lead them to the civil war was the power of the national government that forbid slavery in territories.

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In 1815 Napoleon's forces marched into Belgium where separate armies of British and Prussian troops were camped. At the Battle of Ligny defeated the Prussians. He had also successfully waged war against many European nations and that expanded his empire and that was why he was important in the 19th century. He was an American Solider and union general in the civil war and railroad executive.

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In 1819 America Negotiated to buy the Florida Territory from Spain for 5 million. That land had included Florida and parts of Mississippi, Alabama and Louisiana. The U.S buying Florida territory was a key event of the 19th century because it would mean gaining control of the Mississippi river which was an important trade route because of the controversies with slave and free states in which Florida was considered a slave state and that was one of the causes to it leading to the civil war.

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The land was divided into territories and the population grew and could apply to become states. Illinois was a free state and Alabama was a slave state. Missouri wanting to get admitted became a big debate because the South would loose there voting powers and its power to block anti-slavery bills. They fought against Missouri being added to the union as a free state. This was an important event of the 19th century because it was between the North and the South and was passed by the U.S congress that allowed for the Missouri to be admitted as the 24th state. This event had also lead to the civil war because it was struck down as unconstitutional which had lead to a war.

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This movement happened around 1830 when Historians believed that during the religious movement had inspired abolitionists to rise up against slavery. Frederick Douglass, Sojourner Truth, and John Brown had started the abolition movement. The divisiveness and opposition fueled by the movement was a cause in the civil war starting.

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In 1845 John O' Sullivan copied the terms Manifest Destiny to describe Americans attitude towards westward expansion. After Texas threatened to be a territory of  Britain after being denied admission to the union in 1836 congress annexed Texas. This was a key event of the 19th century because it was territorial expansion and was used to justify the removal of native Americans. This was part of the the new states being added to the union so  that lead to the outbreak of the civil war.

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The Missouri compromise stopped the debate of congress but there was still an issue of slavery. They sent many anti-slavery petitions to Washington D.C and avoided addressing these until 1836. In 1831 over more then 50 white people were killed which lead to stricter slave laws. In 1846 a war with Mexico broke out and U.S won the war. Congress had to decide weather or not they would allow slavery in the new land. It was a key event of the 19th century because it admitted California as a free state and left Utah and New Mexico to decide for themselves weather to be a slave state or a free state. This compromise lead to the civil war because it was an effort to set regional disagreements over the state of American Slavery.

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The Northern Territory In the Louisiana Purchase had been classified as official Indian territory. In 1854 Senator proposed dividing the land into two areas which were Kansas and Nebraska which they would then decide the issue of slavery. While the act made it through congress it encouraged a lot more controversy. Kansas became a breeding ground and settlers with pro and anti slavery poured over the border of Kansas. Two governments were set up one supported and the other one was against. Violence broke between the pro and anti slavery and Kansas became known as "bleeding Kansas." It was a key event of the 19th century because it raised the popularity that slavery could be extended where it was once banned. That was also the cause for the civil war because it was a debate between the U.S which caused the civil war.

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In 1820, congress came to an agreement to allow Missouri to join the Union as a slave state and Main as a free state. This was a key event in the 19th century because Missouri being admitted into the union was followed by the Missouri compromise of 1820. This lead to the civil war because it started the conflict over the extension of slavery that lead to the civil war.

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This happened in 1823 when president James Monroe had forbid European powers of colonizing additional territories in America. This was important because it was essential to U.S foreign U.S policy and in return U.S would not recognize or interfere with existing European colonies. This was a major global power and was hesitant to two world wars starting to happen in the 20th century.

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This happened in the 1830's and was a philosophy in the U.S and expanded the suffrage to most white men over the age of 21. This was a movement for more democracy in America. It was lead by Andrew Jackson, this movement championed greater rights. It was a democratic Republican party and that was one of the causes that had lead to the civil war.

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In 1846 after years of sharing the Oregon country President Polk negotiated with Britain to divide the Oregon country into two parts. This was an important event of the 19th century because it was the U.S right to to extend it's rules and liberties across the North American continent. The Indians were part of the Oregon country and they were affected in the civil war.

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In 1848 it was the end of the Mexican American war. America acquired the Mexican Cession which is large land that compromised the south. This was important because it extended slavery into new territories. This event had caused the civil war because it brought more states and territories into the U.S and many of the northerners did not want slavery expanded into new land and so the south had many weapons and they then started the civil war.

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In 1850 Northern and Southern congressmen allow California to enter the union as a free state and Utah and New Mexico would decide by popular sovereignty. This was something important in the 19 century because it allowed settlers of a territory to decide on the question of slavery with no interference with anyone because of the settlers being able to decide sometimes that lead to further violence that pushed the nation towards civil war.

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In 1853 In order to build a railroad from New Orleans westward to California, congress negotiated with Mexico for a small strip of land in Southern Arizona and New Mexico. This was something that was important in the 19th century because it was important in transferring cargo between things and it was and it was a way to open settlement in the West. This was a cause for the civil war because they took these things to a direct camp where armies were located.

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Both Kansas and Nebraska would decide the issue of slavery by popular sovereignty. This has lead to bleeding Kansas and this happened in 1854. Violence had broke between the pro and anti-slavery which were settlers that poured over the border of Kansas and a guy was beating the other guy because of these issues and that is where the name bleeding Kansas came from. This was important because they had both met in Kansas and this had shaped American Politics and contributed to the starting of the civil war.