Simplify the following text for a Grade 9 native English-speaking person.
Original: Considered integral to the Second Party System and operating from the early 1830s to the mid-1850s , the party was formed in opposition to the policies of President Andrew Jackson and his Democratic Party .
Simplified: It is thought to be important to the Second Party System . Operating from 1833 to 1856 , the party was formed opposing the policies of President Andrew Jackson and the Democratic Party .