What is an assumption historians make when they evaluate a source of information? a. they know an eyewitness will be free of personal bias. b. they know a student who did research will be an accurate source. c. they know an expert will provide the most accurate information. d. they know an eyewitness report will always be truthful.

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.