How did imperialism play a role in causing World War I? A) Different countries promising to defend each other led to many countries getting involved when war began.
B) The competition for overseas colonies would lead to small wars across the world and lead to tensions among European nations.

the correct answer is

d) rocket launcher

naturalization is the process of gaining united states citizenship. becoming an american citizen is the ultimate goal for many immigrants, but very few people are aware that the requirements for naturalization have been over 200 years in the making.

after the spaniards introduced horses to plains native americans, the lives of the tribes changed. tribes became less settled and sedentary. the horse allowed them to hunt animals such as bison or buffalo, and, instead of staying in one place, tribes began to be nomadic.