Josiah Wedgwood’s design for an anti-slaverybrooch. Pictured is an enslaved African man,chained hands held up in supplication, pleading:”Am I not a man and a brother?”This year marks the bicentenary of the abolition of the African slave trade in the British empire. John Ballantyne looks at the life of William Wilberforce (1759–1833), the famous English parliamentarian and anti-slavery crusader.Two hundred years ago, on March 25, 1807, the British Parliament outlawed the trans-Atlantic…