There never has been a time since 1619, when the first slave ship, a Dutch man-of-war, entered James river, in Virginia, when in our country there were not persons protesting against the wickedness and impolicy of the African slave trade and of the domestic slave system. Slavery was introduced into the American colonies, against the wishes of the settlers, by the avarice of British traders and with the connivance of the British government. Just previous to the Revolution, the Colony of Massachusetts made several attempts to relieve itself of the incubus, and the acts of the General Court were smothered or vetoed by three successive Governors, under the plea that they had such instructions from England. In 1772, the Assembly of Virginia petitioned the throne of England to stop the importation of slaves, using language as follows: "We are encouraged to look up to the throne and implore your Majesty's paternal assistance in averting a calamity of a most alarming nature. The importation of slaves into the colonies from the coast of Africa hath long been considered as a trade of great inhumanity, and under its present encouragement, we have much reason to fear will endanger the very existence of your Majesty's dominions. Deeply impressed with these sentiments, we most humbly beseech your Majesty to remove all restraints on your Majesty's Governors of this colony, which inhibit to their assisting to such laws as might check so very pernicious a commerce." No notice was taken of the petition by the crown. This was the principal grievance complained of by Virginia at the commencement of the revolutionary war. The limits allowed me forbid my giving even a sketch of legislative action, of the opinions of great men, of the labors of Samuel Sewall, George Keith, Samuel Hopkins, William Burling, Ralph Sandiford, Anthony Benezet, Benjamin Lay, John Woolman, and others, and of the literature of the subject, from the beginning of the irrepressible conflict in 1619 down to the period we are considering.[13] The revolutionary war, and the questions which then arose, turned the thoughts of men, as never before, to the injustice and impolicy of slavery. At the first general Congress of the colonies, held at Philadelphia in 1774, Mr. Jefferson presented an exposition of rights, in which he says: "The abolition of slavery is the greatest object of desire in these colonies, when it was unhappily introduced in their infant state." Among the "articles of association" adopted by that Congress, October 20, 1774, was this: "That we will neither import, nor purchase any slave imported, after the first day of December next, nor will we hire our vessels, nor sell our commodities or manufactures to those who are concerned in the slave trade."