1. which of the following was a reason for a large european migration to the united states in 1840
a. american culture
b. increase in economic opportunities in the united states
c. to escape religious persecution
d. more opportunities for women

Not sure but these are my answers:  

increase in economic opportunities in the United States  

The Irish Potato Famine  

Germans  

Boston  

all of the above  

food costs  

southern religious leaders  

divided church congregations.  

All of the choices are correct.  

both a and b  

trade  

in wagon caravans  

all of the above

Explanation:

small european communities with shared traditions consolidated into large new states (apex)

a. men

and during later times male slaves as well