During his farewell address, Andrew Jackson said that he had worked on behalf of "the farmer, the mechanic, and the laboring classes of society—the bone and sinew of the country—men who love liberty and desire nothing but equal rights and equal laws."
Identify Jackson's positions that support this claim.

He advocated for the political equality of "common" men to vote and hold office.  He also advocated for equality of opportunity for the "common man" so they could thrive

Explanation:

Andrew Jackson was known to be the seventh president of the United States and served from 1829 to 1837.

He was best known for his support for individual liberty. Especially for the people regarded as common men, such as the farmers, mechanics and the likes.

In this case, in his speech highlighted above , he was trying to speak on behave of the people that were regarded or referred to as the "common men". That is, people of low-class or rank.  So that, these people will also have equal opportunity to political posts and be able to be successful just like the people regarded as high class or rank.

It prevents government officals from making unnecessary mistakes in an investigation.