Explain the key features and purpose of the specific
piece of medieval technology

Features such as migration of people, invasions, population distribution, and deurbanization characterized this period. The medieval ages had three periods, which include the antiquity, the medieval periods, and the modern period, all of which exhibited different characteristics.

Explanation:

1) the answer is b

senators serve a six-year term; representatives serve a two-year term, making them more responsive to (and responsible for) voter confidence.

2) the answer is d

to serve as president, one must:   -be a natural-born u.s. citizen of the united states;   be at least thirty-five years old;   be a resident in the united states for at least fourteen years.

3) the answer is a

ella,because it is constitutionally eligible

4) the answer is c: the u.s president

who was the head of the bureau who was the head of the bureau