<span>because they wanted to prevent future presidential assassinations</span>
I believe the answer is B. Lol
The answer i would choose will be, independent Agencies
In an electoral campaign candidates try to persuade people to cast their votes in favor to them, by stating the things they would do if they won.
The date: March 5, 1770;
The time of the incident: evening;
Who did it: soldiers of the 29th regiment;
(This one is a maybe, because on document a you can only assume it based on where the trial is held) Where it occurred: Boston