Question

One major change in united states politics from the 1820s to the mid-1850s was the

Answer 1

This question is incomplete, here´s the complete question.

One major change in United States politics from the 1820s to the mid-1850s was the

adoption of an antislavery platform by the Whig Party

rise of political parties defined largely by regional interests

collapse of the Democratic Party in the South

decline of competition between parties

Answer: rise of political parties defined largely by regional interests

Explanation:

Beginning in the 1820s, the size of the electorate grew immensely and the  United States politics rapidly changed. Since Andrew Jackson´s election in 1828, the Democrats were established as representing the alliance between small farmers, Westerners, and the working class. On the other hand, the Whig Party, created in 1834, represented businesses, a national bank, and those who wanted a strong central government.

Answer 2

Well during the 1850s January 29, 1850 -there was a debate on slavery.

June 1, 1850 - The United States census of 1850 counts 23,191,876 population, a 35.9% increase from a decade before.