B
monroe doctrine stopped European colonization in the western hemisphere
Answer:
The Cultural Revolution was a horrible time. Mao Zedong used it as an excuse to purge the nation of intellectuals and people of high standing. The Red Guards were students he mobilized to carry out this revolution of terror.
Explanation:
Signing the Camp David Accords is only among following that was a success of the Carter administration and the only one that could be attributed to his administration
Most immigrants came from Ireland due to the potato famine.
Explanation:
One of the most devastating things to happen to Ireland was the potato famine where millions of people died of starvation in a famine tat was largely avoidable but the British did not do anything about it.
A huge stretch of the population thus decided to move away from the nation to settle for better prospects and the majority chose US.
The US thus became swarmed with migrants from Ireland on its shore that wanted sanctuary.