 Complete the following phrase:  Several invasion attempts by American forces were also attempted at the Niagara Peninsula. On October 13, 1812, an American invasion attempt was prevented at the Battle of Queenston Heights; although the commander of British forces in Upper Canada, Major-General Isaac Brock, was killed during the battle. On April 27, 1813, American forces raided and briefly occupied York, the capital of Upper Canada. A month later, American forces 