The Townshend Acts, a series of acts passed, beginning in 1767 were the acts that eventually led to the Boston Massacre. Anger over the Townshend Acts led to the occupation of Boston by British troops in 1768, which eventually resulted in the Boston Massacre of 1770.
The main reason that the Constitution did not proclaim all men to be free and equal is because of the issue of slavery. Many of the Founding Fathers were slaveowners, including George Washington. The Founding Fathers did not want to lose the support of southern states when it came time to ratify the Constitution.
Answer:
it means to protect the interests of native-born people and established inhabitants against immigrants.