Who was dekanawidah and what is he known for

Dekanawidah (the Peacemaker), born a Huron, who is said to have persuaded Hiawatha, an Onondaga living among Mohawks, to advance “peace, civil authority, righteousness, and the great law” as sanctions for confederation.

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )

the answer for 3 is b and the answer for 4 is d