Reconstruction occurred after the Civil War, lasting from 1865 to 1877.
So the answer is A. Reconstruction.
D is the answer i believe
Answer:
Migrants eventually induce social, economic, and political problems in receiving countries, including
1) increases in the population, with adverse effects on existing social institutions;
2) increases in demand for goods and services;
3) displacement of nationals from occupations in the countryside and in the cities;
4) increases in the size of the informal sector of the national economy;
5) deterioration in the salary structures of the informal, rural, and urban sectors of the economy;
6) transculturation;
7) occasional loss of customs and traditions by the local population; and
8) the introduction of diseases and social problems. The receiving countries do benefit from the infusion of skills.
Unlike the fallen Western province of the Roman empire, Justinian and Theodora developed a centralized government where all power and decision-making was concentrated in one unit instead of having power in the hands of many different people in different locations.
