Which of these was a cause of the War of 1812?

there were a variety of causes that led to the war of 1812. they include the following;

the practice of Impressment that is forcing men into military service.

British Orders-In-Council that intended to gain control of the neutral merchant shipping trade with Europe.

Indian attacks against American settlements since the British at the time was supplying Indian tribes of the Ohio Valley and the Great Lakes with weapons.

American expansion into the British and wanting to acquire Canada

American Sovereignty. America asserting its independence from Great Britain once and for all.