Yes it was. Slaves were a very valuable trade good at the time and many times Mali would attack other African Kingdoms simply to acquire more slaves to sell to Europeans.
Your answer is A. The Renaissance was hype about learning stuff.
After the troops arrived, a war commenced
The Third Century was when the assassination occurred.
Hope this helps you :)
B, The US Constituition it is official law while it can be changed and has the highest authority.