Clement's action divided the European catholic church, while Martel's victory unified it is correct.
Many Western politicians together with many Germans and ordinary people in the West, as well as in the East, called this wall the wall of shame. It was called like this because an actual wall was built in the middle of a very important and historically significant city to divide it into two halves.
The correct answer for your case is C - many called it a 'wall of shame'.
It was very true that Missouri was admitted as a slave state
Because they lost thousands of young men for nothing
