How have the events of the early to mid 1800's impacted our society in the United States?

Women were a major part of several reform movements of the 1800s and early 1900s. These reform movements sought to promote basic changes in American society, including the abolition of slavery, education reform, prison reform, women's rights, and temperance (opposition to alcohol).

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

the name of the theory is landmass theory.