Answer:
In explanation hope this helps :)
Explanation:
The announcement made by President Lincoln during the Civil War on September 22, 1862, emancipating all slaves in states still engaged in rebellion against the Union. Although implementation was strictly beyond Lincoln's powers, the declaration turned the war into a crusade against slavery. It went into effect on January 1, 1863.
The answer is B, widespread unemployment
Imperialism, nationalistic pride and mutual alliances all played a part in building tensions that would erupt into war. World War I, which lasted from 1914 until 1918, introduced the world to the horrors of trench warfare and lethal new technologies such as poison gas and tanks.
