Crispus Attucks, an escaped slave, becomes the first colonial resident to die for American independence when he is killed by the British in the Boston massacre.

Around 1770, the European slave trade with Africa reaches its peak, transporting nearly 80,000 enslaved Africans across the Atlantic annually.

Escaped slave, Crispus Attucks, is killed by British forces in Boston, Massachusetts. He is one of the first colonists to die in the war for independence.

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On June 22, Lord Chief Mansfield rules in the James Somerset case that an enslaved person brought to England becomes free and cannot be returned to slavery. His ruling establishes the legal basis for the freeing of England's fifteen thousand slaves.

James Albert Ukawsaw Gronniosaw's writes the first autobiographical slave narrative.

Phillis Wheatley of Boston publishes Poems on Various Subjects, Religious and Moral. This is the first book of poetry published by an African-American woman.

Phillis Wheatley becomes the first published African-American poet when a London publishing company releases a collection of her verse.

Slaves in Massachusetts unsuccessfully petition the government for their freedom.

The first separate black church in America is founded in South Carolina.

Rhode Island becomes first colony to prohibit importation of slaves.

Connecticut, Rhode Island, and Georgia prohibit the importation of slaves.

The First Continental Congress bans trade with Britain and vows to discontinue the slave trade after the 1st of December.

Virginia takes action against slave importation.

Lord Dunmore, promises freedom to male slaves who join British army.

General Washington forbids recruiting officers enlisting blacks to fight in defense of American freedom.

Abolitionist Society Anthony Benezet of Philadelphia founds the world's first abolitionist society. Benjamin Franklin becomes its president in 1787.

In April, the first battles of the Revolutionary war are waged between the British and Colonial armies at Lexington and Concord, Massachusetts. Black Minutemen participate in the fighting.

In July, George Washington announces a ban on the enlistment of free blacks and slaves in the colonial army. By the end of the year, he reverses the ban, ordering the Continental Army to accept the service of free blacks.

In November, Virginia Governor John Murray, Lord Dunmore, issues a proclamation announcing that any slave fighting on the side of the British will be liberated.

The slave population in the colonies is nearly 500,000. In Virginia, the ratio of free colonists to slaves is nearly 1:1. In South Carolina it is approximately 1:2. 1775 Georgia takes action against slave importation.

Continental Congress approves enlistment of free blacks .

Delaware prohibits the importation of African slaves.

In Philadelphia, Pennsylvania, members of the Continental Congress sign the Declaration of Independence.

In Philadelphia, Pennsylvania, the Society of Friends, also known as the Quakers, forbids its members from holding slaves.

Vermont amends its constitution to ban slavery. Over the next 25 years, other Northern states emancipate their slaves and ban the institution: Pennsylvania, 1780; Massachusetts and New Hampshire, 1783; Connecticut and Rhode Island, 1784; New York, 1799; and New Jersey, 1804. Some of the state laws stipulate gradual emancipation.

New York enfranchises all free propertied men regardless of color or prior servitude.

Vermont is the first of the thirteen colonies to abolish slavery and enfranchise all adult males.

Rhode Island forbids the removal of slaves from the state.

Virginia prohibits the importation of slaves.

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