Who's smart in history?? Can you help me ASAP PLZ on my last question WILL MARK YOU BRAINLIEST if you help and write it in your own words

Albert Einstein, he was brilliant and one of my personal favriote people!

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

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.