Americans weren't too happy that Britain wasn't keeping neutral shipping rights. France also wasn't keeping neutral shipping rights but America wasn't as angry with them since in the French Revolution the French overthrow the Monarchy.
Americans wanted more land and wanted British Canada and Spanish Florida. Americans realized Indians were conspiring to attack them also.
The indiana governor was given the job of stopping the indians from attacking them. He was sucessful and the British were blamed for the attack.
The War started with America and Britain getting in a feud because the U.S wasn't getting sea rights. Britain and America were having a quarrel in the western frontier.