The president can appoint ambassadors with the approval of

I believe the answer would be senate.

Ok I believe it is the senate. Let me double check.

YUP!!
The United States Senate is your answer :3

Ifound this on google “simply, the working conditions were terrible during the industrial revolution. as factories were being built, businesses were in need of workers. with a long line of people willing to work, employers could set wages as low as they wanted because people were willing to do work as long as they got paid.” i hope this you for what your looking for.

The answer b is correct this all occurred during the red scare