what factors might account for a increase in the number of black legislators between the 40th congress (1868) and the 45th congress (1876)?

between 1865 and 1870 catapulted former slaves from chattel to voters local disfranchisement laws that denied increasing numbers ... elected to congress—roughly 45 percent of all the blacks ... Several factors account for South Carolina's dominance in black. In the state legislature from 1868 to 1876.

Explanation:

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.