The correct answer is letter A and D.
Explanation: The Great Immigration occurred mainly from the South to the North, which is the most developed in the region. The process was strained as a result of growing social as well as economic inequalities, which increasingly generates labor shortages and sufficient resources for all.
They move because of the poor economic conditions, and the racial segregation in states that has the Jim Crow laws working, in the Southern states.
Using the patient's own stem cells and a fully artificial<span> scaffold</span>
California <span>was the most important to the fulfillment of the dream of manifest destiny.
HOPE THIS HELPS! ^_^</span>
It helped the US economy grow, because it gave the US more of a reason to industrialize like the British. The US needed to mass produce guns and ammunition in order to recreate their military. The mass production of products led to the Industrial Revolution years later.