Complex sentence: The Republican Congress passed many major laws that reshaped the nation's economy, financial system, tax system, land system, and higher education system, including the Morrill tariff, the Homestead Act, the Pacific Railroad Act, and the National Banking Act.
Split into simpler sentences: The Republican Congress passed many major laws that reshaped the nation's economy, financial system, tax system, land system, and higher education system. These included: the Morrill tariff, the Homestead Act, the Pacific Railroad Act, and the National Banking Act.