Basically, the federalist wanted a stronger central government while the Republicans wanted a weaker one.
The question is asking with what kind of document or action "the president can quickly respond to economic, social, or political needs". The best way to the president solve problems quickly, is to use a executive order. So, the answer for the question is letter b) signing executive orders. <span>Is important to remember that the president can't signing legislation without the support of the legislative power.</span>
The primary concern was related to the number of congressmen from free and slave states. If Missouri was admitted into the Union as a slave state, the congress would have more Southerners than Northerners in the congress which would be bad for slaves everywhere. Northerners therefore asked that if Missouri enters as a slave state, Maine has to be separated and enter as a free state.<span />
It was predicted that James Earl Ray killed Martin Luther King Jr. due to his persuading speech. He was worried that if his speech touched many people's hearts and persuaded them against slavery, then slavery would end, but he WANTED to keep having slavery! So, before Martin's speech got slavery to end, he had to end Martin's mouth by taking away his life.
I hope this helps! :-)