How did the expansion of the federal government change people's lives from the 1800s-1900s?

Between the period of the 1800s and 1900s there was an expansion of the federal government that completely changed the lives of peoples in the United States. In this period the United States transformed to an industrial, urbanized nation characterized by technological innovations and an economic growth in the U.S with large scale agriculture and expansion of the federal government. The lives of peoples during this period changed as a result of social tensions that  had been brought by immigration, federal Indian policies, financial turmoils, and the increased demand for workers rights among women and minorities.

remember the people who sacrificed their lives at gettysburg

mark me brainiest

basic principles: federalism, separation of powers, checks and balances, judicial review, representative democracy, limited government, rule of law, individual rights and responsibilities, consent of the governed, majority rule, popular sovereignty, equal protection.