The description of the Constitution as a "living document" refers to :

it refers to the Constitution still being in use, “alive,” relevant to modern day society and law.

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.

they died because of a disease during the first spanish colonies.