Wilberforce joined with Quakers and other fellow Anglicans in a campaign to inform the public about the horrors of the slave trade. His leadership of a remarkable fraternity, unique in British history, led to the formation of chapters of the Society for Effecting the Abolition of the Slave Trade all over Britain. They garnered hundreds of thousands of signatures for legislation relating to the abolition of the slave trade, and they coordinated their activities with like-minded groups in the other slave-shipping countries of Europe and the United States. Wilberforce commenced his anti-slave trade campaign in Parliament, in earnest, in 1789. In the 1790s, the French Revolution and the slave revolt in Haiti set back the forces of the anti-slave trade in England. The bills brought forth by Wilberforce were defeated again and again, and he was even accused of sympathies to the French. Undaunted, Wilberforce and his allies, now called the Clapham Sect, continued to meet, strategize and inform people, despite the criticism and success of their opponents. The parliamentary agreement to abolish the trade “gradually over time” and the War with France that broke out in 1795, slowed the cause for more than ten years.