The American Revolution (1775–83) was a watershed for liberalism. In the Declaration of Independence (1776), Jefferson enunciated many liberal and libertarian ideas, including the belief in “unalienable Rights” to “Life, Liberty, and the pursuit of Happiness” and the belief in the “right” and “duty” of citizens to “throw off such Government” that violates these rights. Indeed, during and after the American Revolution, according to the American historian Bernard Bailyn, “the major themes of eighteenth-century libertarianism were brought to realization” in written constitutions, bills of rights, and limits on executive and legislative powers, especially the power to wage war. Such values have remained at the core of American political thought ever since.

The last sentence may need to be updated, if U.S. Citizens remain with their complacency.

Source:

https://www.britannica.com/topic/libertarianism-politics/Historical-origins