The Underground Railroad was the name of the escape routes used by slaves to escape the South and flee to the North. It was a network of special routes and safe houses that were used by both slaves and abolitionists who were sympathetic to their cause of escaping slavery. It started in the late 1700's and ended after the abolition of slavery. Canada was a popular destination, as slavery was prohibited their and had a longer border for easier access.
African Americans in the South often help Union forces by serving as spies and scouts. African Americans did all they could to help the Union army. This was especially true after the Emancipation Proclamation, as Lincoln attempted to free slaves from the control of Confederate states. This was one of the many reasons why African Americans in the South helped Union forces. These citizens often acted ignorant or didn't appear to be paying attention when Southerners discussed their next military moves. African Americans would then relay this information to the Union commanders, giving them a strategic advantage.
I dont know exactly but the new deal lead to Japan getting mad and attacking Hawaii which was the spark that lead to ww2
The doctrine that allowed people living in the territories to decide the issue of slavery through their governmental bodies was called popular sovereignty.
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As the first Roman emperor to claim conversion to Christianity, Constantine played an influential role in the proclamation of the Edict of Milan in 313, which decreed tolerance for Christianity in the empire. He called the First Council of Nicaea in 325, at which the Nicene Creed was professed by Christians.