While economic policies were the original catalyst to the partisan split between the Democratic-Republicans and the Federalists, foreign policy was also a major factor that divided the parties. Most Americans supported the French Revolution prior to the Execution of Louis XVI in 1793, but Federalists began to fear the radical egalitarianism of the revolution as it became increasingly violent. Jefferson and other Democratic-Republicans defended the French Revolution. until Napoleon ascended to power between 1797 and 1803. Democratic-Republican foreign policy was marked by support for expansionism, as Jefferson championed the concept of an "Empire of Liberty" that centered on the acquisition and settlement of western territories. Under Jefferson, Madison, and Monroe, the United States completed the Louisiana Purchase, acquired Spanish Florida, and reached a treaty with Britain providing for shared sovereignty over Oregon Country. In 1823, the Monroe administration promulgated the Monroe Doctrine, which reiterated the traditional U.S. policy of neutrality with regard to European wars and conflicts, but declared that the United States would not accept the recolonization of any country by its former European master.