Thomas Jefferson was one of the earliest and biggest advocates for <em>egalitarism</em>, he promoted political equality while most of his contemporaries were still pushing the idea that the rich and powerful should lead the Nation.
Some of his most remarkable domestic policies include:
-The extension of suffrage by eliminating property recquirements in order to vote.
-Individuals outside of the elite social class were now encouraged to actively participate in politics and pursue the chance to work in government positions.
-Cutting of useless offices and establishments previously created by the Federalist programs, as well as reducing of the army's budget and overall public expense.
-Lowering of the national debt from $83 million to $57 million.
-Approval of the 12th amendment, which change the procedure of elections for Presidency and Vice-presidency.
-Admission of the new State of Ohio to the Union.
-Construction of the National Road, connecting the east coast to St. Louis
-Rise in funding for public education.
As you can see, Jefferson's policies had many benefits for the development of the Nation, both economically and ideologically.
Hope this helps out!