The Northwest Ordinance of 1787 defined the boundary between the northern and southern tier of states to be carved from the Northwest Territory as a line drawn east from the southernmost tip of Lake Michigan until it intersected Lake Erie, but controversy over its exact location led to the 1834-1837 boundary dispute between the State of Ohio and Michigan Territory as both sides expected Toledo to become a major port city in the disputed area. President Andrew Jackson settled the dispute in 1836 by recognizing the current Ohio-Michigan border, giving Michigan 9,000 square miles in the Upper Peninsula and awarding the disputed strip of about 470 square miles to Ohio, and Michigan entered the nation as a state the following year. In one clash within that struggle, the Battle of Phillips Corners took place on April 26, 1835, after Ohio Governor Robert Lucas sent a survey party to re-mark the 1817 William Harris survey line on land claimed by Michigan Territory. When the party stopped to rest on land owned by Colonel Eli Phillips of the Michigan Militia, Under-Sheriff William McNair, acting under authority of Michigan Territory Governor Stevens Mason, formed a posse of local deputies and tried to arrest the surveyors for illegal trespass. The three Ohio Boundary Commissioners escaped with Colonel Sebried Dodge of the Ohio Corps of Engineers and a Pennsylvania and Ohio Canal surveyor and engineer, shots were fired in the surveyors' direction, no one was killed or wounded, and nine members of the armed party were arrested.