Why do you think it was so difficult to reach agreement in Northern Ireland?

Northern Ireland leadership faces difficult challenges

Explanation:

The era, known as the Troubles, largely pitted the historically dominant Protestants against the catholic minority. A peace deal struck in April 1998 created to a power-sharing government that included political forces aligned with armed groups.

the answer to number 5 is fort sumter

d.

the northwest territory became the most densely populated area in the u.s.