Your quotation reflects a principle from the Articles of Confederation, which served as the first constitution of the United States. The Articles, ratified in 1781, emphasized the independence and sovereignty of each state while creating a loose confederation for collective governance. The specific phrase you've cited addresses the concern that any powers not explicitly granted to the federal government would remain with the states.
The key idea here is the balance of power between the state and federal governments. The Articles of Confederation were later replaced by the current U.S. Constitution in 1789, which established a stronger federal government and implemented a different system for delineating powers between state and national authorities. If you have any questions about the Articles of Confederation, the U.S. Constitution, or related topics, feel free to ask!