One reason for the growth of representative government in cononial America was the British government

Religious freedom was a main cause for the establishment of the American colonies. Religious groups (Pilgrims, Puritans, Quakers, etc.) created communities that were self-governed. Penn Colony (Pennsylvania) was an experiment in the possibility of equality and citizens involved in the government.

Explanation:

i learned this

the protestant reformation's started in 1517, disturbing the religious and political order in europe´s catholic countries. the outcome was the european wars of religion prosecuted in europe in the 16th, 17th and part of the 18th century. nonetheless, uprisings, territorial disputes, and great power conflicts were also causes of the wars.  

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )