Dred Scott was a slave who sought citizenship through the American legal system, and whose case eventually ended up in the Supreme Court.

States’ Rights refers To the struggle between the federal government and individual states over political power.

Abolitionist Movement
By the early 1830s, those who wished to see that institution abolished within the United States were becoming more strident and influential. They claimed obedience to "higher law" over obedience to the Constitution’s guarantee that a fugitive from one state would be considered a fugitive in all states.

Additional territories gained from the U.S.–Mexican War of 1846–1848 heightened the slavery debate. Abolitionists fought to have slavery declared illegal in those territories, as the Northwest Ordinance of 1787 had done in the territory that became the states of Ohio, Indiana, Illinois, Michigan and Wisconsin.

The Battle of Gettysburg was a significant turning point of the Civil War because it prevented a confederate invasion of the North and eliminated about one-third of General Lee's men. The Battle of Gettysburg was a three day battle that took place in Gettysburg, Pa., between July 1st and July 3rd of 1863.

Sherman's march to the sea definition
A movement of the Union army troops of General William Tecumseh Sherman from Atlanta, Georgia, to the Georgia seacoast, with the object of destroying Confederate supplies.

The Civilian Conservation Corps was created to combat unemployment. This work program helped provided jobs for many Americans during the Great Depression. The CCC was responsible for building many public. 

 2. CWA - Civil Works Administration                 

The Civil Works Administration was created in 1933 to create jobs for the unemployed. Its focus on high paying jobs in the construction arena resulted in a much greater expense to the federal government than originally anticipated. The CWA ended in 1934 in large part due to opposition to its cost.3. 

 3. FHA - Federal Housing Administration                 

The Federal Housing Administration was a government agency created to combat the housing crisis of the Great Depression. The large number of unemployed workers combined with the banking crisis created a situation in which banks recalled loans. The FHA was designed to regulate mortgages and housing conditions.

4.  FSA - Federal Security Agency                 

The Federal Security Agency was responsibility for several important government entities.  it administered social security, federal education funding, and food and drug safety. 

5.  HOLC - Home Owners Loan Corporation                 

The Home Owner's Loan Corporation was to assist in the refinancing of homes. The housing crisis created a great many foreclosures.

1. The Rise of Militarism  

after 1890, Europeans began to view the use of military power as not only feasible but also desirable to bring a resolutions to the increasingly hostile political conditions in Europe.

2.The Arms Race

The wave of nationalist militarism also manifested itself in a continuing arms race that threatened the balance of power, owing to revolutionary technological developments" like how mortars and cannons "improved in range, accuracy, and firepower", the machine gun, new submarines, airplanes, & improved naval weaponry. Some countries were eager to test this new equipment, a long term cause of the mass eruption of war.

3.Imperialism as a Source of Conflict

Countries fought over territories they annexed during the New Imperialism, creating more enemies.

4. Awkward Balance of Power and Europe's complex Alliance System. Because of this alliance system, all of Europe quickly got entangled in a war which only involved two countries.

Short Term:

1.The assassination of Franz Ferdinand.

2. Balkan Crisis, where Austria-Hungary and Russia had an intense rivalry over who would have the greater sphere of influence in the deteriorating Balkans. 
Immediate cause:
 Was the German invasion of Poland.

The Civil Rights Act of 1968 ended discrimination in housing, school segregation, “white only” accommodations. People could not be discriminated against by employers.