b. anger over immigrant workers taking “American jobs” led to the Civil War.
Explanation:
Although immigration existed before the Civil War, this was moderate compered to the years that came after the Civil War. Moreover, immigration had very little, or nothing, to do with the outbreak of the Civil War. The war was caused by the divisions between the North and the South of the country, including their views on slavery, industry, state rights and unity.
The Nile River supplied a constant water source and fertile land around it that could be used for farming, which is important because pretty much everywhere else on the African continent is desert
You could start off with the news report about how Soviet and U.S almost started another war due to a missile crisis with Cuba or how soviet's government is different from ours. Basically compare and contract Soviet and U.S.
Hopefully this can get you a head start Have a great day :)