He was the first American President in attending a Peace Conference, and not only he attended but he was one of the major powers who actively participated in it by proposing peaceful negotiations to a long-lasting peace in Europe, that included not to punish Germany harshly.
Explanation:
a unitary system is lead by one governing system
federal gives authority to state and local systems
D - Failures.
The only attempted british colony in North America before 1600 was Roanoke, Virginia, which was a total failure. England claimed several areas, including Newfoundland, but made no sustainable attempts to colonize them before 1600.
I think it's either committee or precinct, not totally sure.