Someone help me i need to answer this right now

:)

Explanation:

Pros:

- new technologies such as the mariner's cumpus introduced to the Old World from Europe

- livestock such as sheep and cows brought to Old World from Europe

Cons:

- introduced disaterous new diseases to native populations (example: smallpox) = large amount of death

- indigenous crops were displaced by plowing and western farming techniques

answer; (a) he was a u.s senator for 38 years;