Answer:
d. rocks are made of more than one mineral
The answer is B, none of the other ones work
The Cuban Missile Crisis has become one of the critical points in the history of the Cold War. With Soviet nuclear warheads already positioned to strike the America, the world feared that it could be the brink of a third world war. Both superpowers thought house close could be thus, communications between Washington and Moscow were increased.
Railroads brought crops and food to cities in the East, and settlers to farms in the Great Plains
Social reformers and journalists
jane adams Jacob Riis and Ida Tarbel
