during the Revolutionary War, Jefferson recommended moving the Cherokee and Shawnee tribes, who had allied with the British, to west of the Mississippi River. But when he took office as president, he quickly took measures to avert another major conflict, as American and Indian societies were in collision and the British were inciting Indian tribes from Canada. In Georgia, he stipulated that the state would release its legal claims for lands to its west in exchange for military support in expelling the Cherokee from Georgia. This facilitated his policy of western expansion, to "advance compactly as we multiply". In keeping with his Enlightenment thinking, President Jefferson adopted an assimilation policy toward American Indians known as his "civilization program" which included securing peaceful U.S. – Indian treaty alliances and encouraging agriculture. Jefferson advocated that Indian tribes should make federal purchases by credit holding their lands as collateral for repayment. Various tribes accepted Jefferson's policies, including the Shawnees led by Black Hoof, the Creek, and the Cherokees. However, some Shawnees broke off from Black Hoof, led by Tecumseh, and opposed Jefferson's assimilation policies. Historian Bernard Sheehan argues that Jefferson believed that assimilation was best for American Indians; second best was removal to the west. He felt that the worst outcome of the cultural and resources conflict between American citizens and American Indians would be their attacking the whites. Jefferson told Secretary of War General Henry Dearborn (Indian affairs were then under the War Department), "If we are constrained to lift the hatchet against any tribe, we will never lay it down until that tribe is exterminated or driven beyond the Mississippi." Miller agrees that Jefferson believed that Indians should assimilate to American customs and agriculture. Historians such as Peter S. Onuf and Merrill D. Peterson argue that Jefferson's actual Indian policies did little to promote assimilation and were a pretext to seize lands. Re-election in 1804 and second term Jefferson's successful first term occasioned his re-nomination for president by the Republican party, with George Clinton replacing Burr as his running mate. The Federalist party ran Charles Cotesworth Pinckney of South Carolina, John Adams's vice-presidential candidate in the 1800 election. The Jefferson-Clinton ticket won overwhelmingly in the electoral college vote, by 162 to 14, promoting their achievement of a strong economy, lower taxes, and the Louisiana Purchase. In March 1806, a split developed in the Republican party, led by fellow Virginian and former