World War 1 or First World War was known as the Great War or "The war to end all wars", before the beginning of the Second World War.
The principal countries involved in this war were Russia, France, Britain, Italy and the United States of America in one side, and Germany, Austria-Hungary, and Turkey on the other side, forming two opposed alliances: The Allies and the Central Powers.
This war began because of a Serbian nationalist, who killed Archduke Ferdinand, heir of the Austrian throne. Because of this act of terrorism, a great war started, and that come to be known as the major European conflict in a hundred thousand years.
The freeing of serfs in Russia was an expression of liberalism because it advocated individuals having personal freedom. As Alexander said to the nobles, "The existing condition of owning souls cannot remain unchanged."
However, what was done in freeing the serfs expressed conservatism because the arrangement ultimately favored the nobles, leaving half of the lands in their hands and requiring payment from the serfs to the nobles for any lands transferred to them.
Note: The Civil War in the USA began in the same year that the emancipation of serfs was proclaimed in Russia. Technically, serfdom in Russia was not the same as slavery in the United States. Landowners did not own the serfs as property, but because they were bound to the land as workers for the landowner who owned the land, their resulting situation was similar. And because they were given legal freedom but had to pay for any land they would acquire from the nobles, the cost of their freedom was high.
People from the continent of Africa were enslaved in the southern colonies of what is now America.
They were sold and bartered like goods for the benefit of plantation owners, so that they could work and tend to the farm and other properties.
