Which of the following identifies two of the causes of the War of 1812? A. William Henry Harrison led American soldiers against the French; Canada wanted to become part of the United States. B. Great Britain interfered with American ships; Great Britain and the United States were in conflict over the Northwest Territory. C. France wanted to regain control of Canada; Great Britain believed that the Americans were supplying weapons to American Indians. D. The French blockaded ports to stop trade between America and Great Britain; Tecumseh joined America to fight Great Britain.