Answer:
The north used the rising number of immigrants to staff the industrial economy (factory jobs, warehouse jobs, etc...) the south felt no need to employ immigrants on their plantations because the invention of the cotton mill had made slavery a more economical option.
Answer: Experiment - randomized block design
Explanation:
A randomized block design (RBD) is an experimental study where the scientist classifies subjects into different groups, denominated blocks. The subjects within each block are assigned to the different treatments, varieties of wheat in this example.
A randomized block design is effective when the subjects within blocks are comparable in how they influence the response variable but differ from other blocks.
The answer is C. In 1954 McCarthy was ousted from American political life as his actions were exposed to the American people. He was censured by the Senate for attacking the army. He lost his power though he kept his job. He died in 1957 due to his alcoholic addiction.
