La Crosse to Lake Superior and all of present-day Minnesota east of the Mississippi River. Shortly afterward, in 1787, the Americans made Wisconsin part of the new Northwest Territory. Later, in 1800, Wisconsin became part of Indiana Territory. Despite the fact that Wisconsin belonged to the United States at this time, the British continued to control the local fur trade and maintain military alliances with Wisconsin Indians in an effort to stall American expansion westward by creating a pro-British Indian barrier state. The War of 1812 and the Indian wars The United States did not firmly exercise control over Wisconsin until the War of 1812. In 1814, the Americans built Fort Shelby at Prairie du Chien. During the war, the Americans and British fought one battle in Wisconsin, the July, 1814 Siege of Prairie du Chien, which ended as a British victory. The British captured Fort Shelby and renamed it Fort McKay, after Major William McKay, the British commander who led the forces that won the Battle of Prairie du Chien. However, the 1815 Treaty of Ghent reaffirmed American jurisdiction over Wisconsin, which was by then a part of Illinois Territory. Following the treaty, British troops burned Fort McKay, rather than giving it back to the Americans, and departed Wisconsin. To protect Prairie du Chien from future attacks, the United States Army constructed Fort Crawford in 1816, on the same site as Fort Shelby. Fort Howard was also built in 1816 in Green Bay. Significant American settlement in Wisconsin, a part of Michigan Territory beginning in 1818, was delayed by two Indian wars, the minor Winnebago War of 1827 and the larger Black Hawk War of 1832. The Winnebago War The Winnebago War started when, in 1826, two Winnebago men were detained at Fort Crawford on charges of murder and then transferred to Fort Snelling in present-day Minnesota. The Winnebago in the area believed that both men had been executed. On June 27, 1827, a Winnebago war band led by Chief Red Bird and the prophet White Cloud (Wabokieshiek) attacked a family of settlers outside of Prairie du Chien, killing two. They then went on to attack two keel-boats on the Mississippi River that were heading toward Fort Snelling, killing two settlers and injuring four more. Seven Winnebago warriors were killed in those attacks. The war band also attacked settlers on the lower Wisconsin River and the lead mines at