Which factor has been a major cause of mass migrations during the modern
era?
O
A. Massive pandemics have forced entire popuiations to flee
countries.
O
B. Wars and ethnic conflicts have forced people to leave their
homes.
O
C. International restrictions on trade have created high levels of
global poverty.
0
D. Traditional family structures have pressured children to move
away from their parents.

explanation:

there are two statements that are incorrect.

1. the marshall plan was a lend lease program. it was an economic plan that europe redevelop itself after wwii.

2. einstein didn't really do anything to further the allied cause in building the bomb. he merely sent a letter to fdr telling him (in 1939) that if the united states entered the war, perhaps it would be wise to build the bomb before germany did. i would say this answer is incorrect, but when america entered the war 2 years later, fdr thought it might be a good idea to take einstein's advice.

the 4th choice is definitely so wrong that is likely the single answer of this question

the safahids used force when persuasion to convert from being a sunni muslim to embrace shi'ism was not effective. they also persecute shi'ites who have different views from their imposed teachings.

c. had saved colonel cresap's family from attack by other native americans.