"Immigrants who came to work in the factories lived in urban neighborhoods."
When unions were first organized, union leaders were in competition with one another in order to get the most active labor members, but they soon realized that this was a failing tactic and often united into single groups.
The Enlightenment thinkers changed peoples' beliefs of how government should work by talking of separation of powers and checks and balances.
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Answer:
European countries established colonies throughout the world, mostly in America and Africa, from the 1400s up till the early 1900s. After WWI and WWII, international boundaries changed. They mainly focused on balancing power. After WWI, the country fell under the power of the Soviet Union. Once the Soviet Union took over, conflicts emerged between the people living in the state.