One of kennedy's achievements was the creation: of americorps peace corps salvation army senior corps

Peace Corps is your answer.

President Kennedy created the Peace Corps to provide assistance, care, supplies, and other much needed things to countries in need (specifically 3rd world countries and war-torned countries)

hope this helps

b. major john c. frémont led a rebellion called the bear flag revolt.

explanation:

during the bear flag revolt, from june to july 1846, a small group of american settlers in california rebelled against the mexican government and proclaimed california an independent republic. the republic was short-lived because soon after the bear flag was raised, the u.s. military began occupying california, which went on to join the union in 1850. the bear flag became the official state flag in 1911.

your answer will be b. improving roads, bridges, and other infrastructure. hope i !