The nuclear non-proliferation treaty went into effect begging in 1970 for a period of 25 years in 1995, an international conference
a. declined to review it
b. renewed it for another 25 years
c. renewed it permanently
d. renew it, but increased the number of permitted nuclear powers

The nuclear non-proliferation treaty went into effect beginning in 1970 for a period of 25 years until an international conference "A. declined to review it" since they thought it wasn't working. 

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.

Lol sorry i didnt answer ur question. but, did u know u can get ez points by typing random stuff : 3