What major change was implemented in the U.S. Constitution compared to the Articles of Confederation?

The major change implemented in the U.S. Constitution compared to the Articles of Confederation was the establishment of a strengthened central government. The Articles of Confederation created a loose confederation of states with a weak central government that lacked the power to regulate commerce, levy taxes, or enforce laws. This resulted in significant difficulties in governing effectively, as the federal government was often unable to respond to national issues or crises, such as Shays' Rebellion.

In contrast, the U.S. Constitution provided for a more robust federal structure, allowing for a strong central government with distinct branches: the legislative, executive, and judicial. This structure ensured checks and balances, enabling the federal government to effectively manage interstate commerce, maintain order, and implement laws across the states, thereby addressing many of the shortcomings of the Articles of Confederation. The transition to a stronger central authority was pivotal in creating a functional and cohesive national government capable of addressing the needs of a growing republic.