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

Brainliestttme : )why was the launch of sputnik in 1957 important? -most in the u. s. had not thought the soviets were capable of producing satellite technology.- it made clear that the u. s. space program was dominant.- most in the soviet union had not thought the u. s. was capable of launching manned aircraft. -it established the fact that a more dangerous hydrogen bomb could be created.

During the civil war, which leader often had fewer troops available for battle? george mcclellan robert e. lee jefferson davis winfield scott

Which would make the best heading for this list of notes about the migration of african-americans during the reconstruction era?