Answer:
A
Explanation:
The Roughriders were lead by Ted Roosevelt, while the Buffalo Soldiers were an African American Unit.
Over the course of millennia, Paleo-Indians spread throughout North and South ... they have been living there since their genesis, described by a wide range of ..... City of Caral, in the Supe valley, is one of the largest and best studied sites.
Answer:
b.
Explanation:
It wouldn't be A because they all aren't scientific discoveries.
It wouldn't be C because barbed wire and windmills do not fall under the communication category.
It wouldn't be D because windmills are not transportation.
