Northerners lost interest in the Reconstruction era because the Northerners got tired of trying to help fix the South's social problems and the Northerners wanted to start working on fixing their own social problems.
Hope this helps!
I am pretty sure that Assimilation is the adoption of another's culture
If you're asking who the person was, it is Hamilton Holmes.
Answer is b
That was around the time Japan bombed pear harbor