Answer:
they were searching for gold
Explanation:
During the Gold Rush of 1849, tens of thousands of people flocked to California to seek their fortunes mining gold. It was the largest migration in United States history.
I think is the 1st option, hope that helps :)
The answer is C.) the mentioning that not even today citizens face barriers to exercising their right to vote
Sub-Saharan Africa was experiencing an urgent medical crisis in the early 21st century with the spread of AIDS.
So the correct answer is A.
Hope this helps,
Davinia.