Which statement explains why emancipated slaves who migrated to northern cities face significant economic difficulties?

a. the cities had an insufficient supply of housing to meet the demand from migrants.

b. emancipated slaves had no experience handling the money they earn from wages.

c. the only available jobs in north required skilled labor .

d. african americans had to compete with new immigrants for low-paying factory jobs.

D. African Americans had to compete with new immigrants for low-paying factory jobs.

Explanation:

When slaves were emancipated, many moved North. This move was appealing because they believed they were likely to face less discrimination in the North. It was also motivated by the fact that the North had more factories and various industries that could provide employment for the emancipated slaves. However, at the same time, many immigrants were arriving to the United States and settling in the North, which meant that African Americans had to compete with new immigrants for low-paying factory jobs.

answer: wait what

explanation:

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.