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The Seven Years' war, a conflict between allies France, Austria, Russia and others against Prussia, Great Britain and others, ended with the signing of the treaties of Hubertusburg and Paris. This treaty gave Great Britain control over spanish florida and parts of Canada that would later become American territory.

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The Stamp Act was passed  as a part of the Parliament of Great Britain, which imposed a direct tax on all printed materials effective in the British Colonies in America. This triggered the Stamp Act Congress, which was the first significant response to any Act passed by the British Parliament.

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A confrontation, later known as the Boston Massacre, occured between a group of British Soldiers and a mob of people verbally harassing them turned violent as the soldiers shot without instruction, killing some and injuring many. Due to propaganda, rumors, and depictions formed by this, tension rose heavily within the Thirteen Colonies.

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After a history of conflicts between the newly established colonies and the English motherland, the fifty-six members of the Second Continental Congress signed the Declaration of Independence. This signing took place in Philidelphia and the anniversary of this event is celebrated on July 4, which was when the Second Contintental Congress adopted the declaration which announced the colonies seperation from England.

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The American Revolution begins with the "shot heard round the world" in the towns of Lexington and Concord.

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The Treaty of Paris was signed by representatives of King George III and American representatives Benjamin Franklin, John Adams, and John Jay which officially ended the American Revolution.

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Explored by Lewis and Clark, the Louisiana Territory (a vast piece of land West of the Mississippi) was purchased by the United States Government. Thomas Jefferson paid the French Government $27 million dollars, a significantly undervalued rate. This land purchased shaped the borders of the country.

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President James Monroe signed the Monroe Doctrine stating that the United States would no longer intervene in European Affairs. However, the country would not allow Europe to colonize the Americas.

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German philosophers Karl Marx and Friedrich Engels published a pamphlet of their ideologies about class struggle and capitalism known as the communist manifesto.  Social-Democracy began to rise as well as the popularity of the text, which would be one of the causes of the Red Scare.

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Republican Candidate Abe Lincoln is inaugurated as the President of the United States. This event was incredibly important because the election of a Republican president threatened Southerners because they feared their rights (to own slaves) would be infringed upon and the seceded from the US to form the Confederate States of America.

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President Abraham Lincoln signed the Emancipation Proclamation which stated that "all persons held as slaves within the rebellious states are, and henceforward shall be free." This declaration forced the South to make slavery illegal after the Civil War ended in order to rejoin the United States.

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The Battle of Gettysburg began in Pennsylvania. The battle was fought between the Northern Union and the Southern Confederecy. This was the largest battle of the civil war.

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General Robert E. Lee surrendered therefore ending the civil war. Lee was the commander of the last major Confederate Army. He surrendered to Union General Ulysses S. Grant at the Appomattox Courthouse in Virginia.

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Archduke Franz Ferdinand was assassinated by Gavrilo Princep. This is one of the direct causes of WW1 because this led Austria-Hungary to declare war on Serbia, which caused war in most other European states.

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The Battle of Somme took place on the upper regions of the River of Somme in France. In this frontline offensive British and French troops fought against the German empire. This battle was important because it had a massive amount of casualties and seemed to symbolize the horrors of war and the negatives of trench warfare.

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The League of Nations was founded, being the first worldwide intergovernmental organization. Their goal was to maintain world peace, and while they eventually disbanded, while the League of Nations still was in effect, they were able to resolve many territorial conflicts.

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The United States stock market crashed. During the 1920's people made purchases based on credit with the intent to repay their debts later. People invested lots of money in stocks and when people pulled their money out of banks and stocks out of fear, the market crashed.

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President FDR began his radio show known as Fireside chats. His transparency with the media set the precedent for future presidents. These "chats" restored faith in the American government by creating trust and people regained confidence in the banking system.

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The Japansese city of Hiroshima was bombed by the United States. This was the first time in history that an atomic bomb was used in war. The attack killed around 140,000 people.

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US General Douglas MacArthur formally accepted Japanese surrender on a battleship in the Tokyo Bay. Later, United States President Harry Truman announced Japan's surrender which ended WWII.