Which Oklahoma historical era does B describe? A. The Civil War
B. Reconstruction
C. Settlement period
D. The American Indian republics

B is represented by The Civil War

Explanation:

Just find out which one occurred during that period .

Reconstruction happened from 1865-1877 which would represent C

If you recall learning , The Civil War started because of the Confederates and that took places from 1861-1865. The Civil War represents B.

c

explanation:

i am pretty sure hopefully just you

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.