External taxes were levied by the British Parliament upon the American colonies. These taxes were opposed by the colonists, who argued that only their own colonial assemblies had the right to tax them. The most famous of these taxes was the Stamp Act of 1765, which required colonists to purchase a stamp for various types of paper goods. Other external taxes included the Townshend Acts of 1767 and the Tea Act of 1773. The Stamp Act was repealed in 1766 after widespread protest from the colonies, but the Townshend Acts and Tea Act were not. These taxes were a major cause of the American Revolution, which began in 1775.