When did John C Calhoun generally coin the phrase states rights?

Answer 1

John C. Calhoun, a prominent American statesman and political theorist, is often associated with the phrase "states' rights" in the early 19th century, particularly during the 1830s. He articulated this concept as a defense of the rights of individual states against federal authority, especially in the context of issues like slavery and tariffs. Calhoun's advocacy for states' rights became a significant part of his political philosophy and had lasting implications for American political discourse.