Answer is C. hope this helps
I believe it's A.
The Muslims did control Jerusalem for a time, and I believe that they forced the Christians out of it.
Also the Crusaders did sack Constantinople when they were not allowed in by the government there.
I don't know what D is but I'll assume that it is true because I think A is false.
A is the answer, expansionism
A lobbyist is someone who takes prrnin an organized attempt to influence a legislator, they affect the government because it can sway the vote of legislators and politicians