After the French and Indian War, tensions rose between the British government and the American colonies over territorial expansion, taxation, and representation. The Proclamation of 1763 barred colonial settlement beyond the Appalachian Mountains, angering many colonists. The Stamp Act of 1765 levied new taxes on printed materials in the colonies and sparked protests over "no taxation without representation." Further conflicts ensued over the Townshend Acts and the Boston Massacre, increasing colonial calls for independence.