Answer:
C) Americans should put the bitter election behind them and unite as a nation.
Explanation:
Edge2020
the refusal by Republicans to pursue civil rights alienated many black voters, while efforts—shallow though they were—by northern Democrats to open opportunities for African Americans gave black voters reasons to switch parties.
Well in this period, it is considered the old stone age and for good reason, as this era is characterized by the use of rudimentary chipped stone tools. Basically it was the era when human started using tools that were made from stone. Or in other words, innovated.