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:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

plz give me brainliest!

b.

one company controls all the means of production of a product.

~coco

the answer to your question is

the treaty of hopewell

the citation´s place is in position 4.

as carl becker

pointed out during the rise of european fascism after world war i

for democracy to prosper, it needs “a certain measure of economic security”

.

example (johnson 4)