What significant challenge did cities face as a result of rapid industrialization in the 1800s? attracting skilled laborers to work in new and developing factories convincing factory owners to move their business to the cities establishing shipping for raw materials and manufactured goods providing enough city services to protect and support new citizens

D. providing enough city services to protect and support new citizens

he impacted the society ith his knowwdge and advance our research by years to come

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.