Answer:
War, religious persecution, Economic crash
Explanation:
The Irish Migration was largely due to religious persecution and economic decline. War could easily cause a migration for fear of personal safety, we have seen an increase in immigrants from Central America and Syria in recent years. Religious freedom is partially what the US was founded on, it continues to be a life or death issue under ISIS and other organization who use religion as an excuse for violence. Economic crash leads to movement based on new opportunities.
Answer:
by giving some of it to the people
Explanation:
The freedmen, who wanted autonomy and independence, refused to sign contracts that required gang labor, and sharecropping emerged as a compromise. ... In exchange for the use of land, a cabin, and supplies, sharecroppers agreed to raise a cash crop and give a portion, usually 50 percent, of the crop to their landlord
The whites and blacks had close ties despite slavery, so the answer would be A
The snowball effect is actually a small process of initial states to build upon itself , however it is potentially dangerous