Answer:
It was formed by delegations from seven slave states of the Lower South that had proclaimed their secession from the Union. After the fighting began in April, four additional slave states seceded and were admitted.
Explanation:
google
B is the answer! Lmk if there’s any more questions
Impeding - to delay or prevent by obstructing it/them.
so your answer is B. Obstructing; slowing down.
Not sure what the options are but there was a huge wave of immigration during that era.
Isolationism, or staying to themselves