At the Center for Reformed Theology and Apologetics we read:

The Decision of the Synod of Dordt on the Five Main Points of Doctrine in Dispute in the Netherlands is popularly known as the Canons of Dordt. It consists of statements of doctrine adopted by the great Synod of Dordt which met in the city of Dordrecht in 1618-19. Although this was a national synod of the Reformed churches of the Netherlands, it had an international character, since it was composed not only of Dutch delegates but also of twenty-six delegates from eight foreign countries.

The Synod of Dordt was held in order to settle a serious controversy in the Dutch churches initiated by the rise of Arminianism. Jacob Arminius, a theological professor at Leiden University, questioned the teaching of Calvin and his followers on a number of important points. After Arminius’s death, his own followers presented their views on five of these points in the Remonstrance of 1610. In this document or in later more explicit writings, the Arminians taught election based on foreseen faith, universal atonement, partial depravity, resistible grace, and the possibility of a lapse from grace. In the Canons the Synod of Dordt rejected these views and set forth the Reformed doctrine on these points, namely, unconditional election, limited atonement, total depravity, irresistible grace, and the perseverance of saints.

You can read the entire article as well as the Canons themselves right here.