It must be remembered that Great Britains economy grew and strengthened greatly thanks to two things; the first, the colonies, which provided the empire with all the goods and resources that could only increase the trading its trading capability and power. The second, and most important, was the initation of the slave trade, which empowered and strengthened the English economy because now they had free laboring hands that multiplied the production capacities of the farms and lands particularly in the colonies. However, many Englishmen opposed the slave trade because of its injustice and brutality. One such people was William Wilberforce, a British politican and philanthripist who became one of the head leaders of the abolitionist movement in England. At the time that the movement initiated and began its lobbying in Parliament to get the slave trade abolished, around 80% of British production and trading depended on slave hands and the slave trade. These companies needed slave hands to plow and multiply the production especially in the sugar-producing colonies.