They were all slave states that had remained in the Union and this is what Missouri, Kentucky, Maryland and Delaware had in common during the Civil war. The correct option among all the options that are given in the question is the second option. I hope that this is the answer you were looking for and it helped you.
I dont know what your question is really saying
The answer to to Part A is A. The main theme is to show someone Mercy to others even if they don’t deserve it.
The answer to Part B is B, if it’s not B it’s D
He unified Russia, took the title of tsar, and rebuilt Moscow's Kremlin
It's closer to the sun in the morning? Google it!