Though commercial sugar production began in the first years of the 1800s, the industry remained relatively minor until the Reciprocity Treaty of 1875. This treaty provided duty-free trade of sugar between the Kingdom of Hawaii and the United States, and it generated massive disruptions in the sugar industry. Plantation growth and consolidation soon followed, with the number of plantations falling from 79 in 1875 to just 20 in 1883. Prior to this disruption, the agencies played a much more limited role in Hawaiian industry. They served primarily to add liquidity to an agricultural industry with long growing periods (18-24 months) by both providing credit against future sales and providing transportation to foreign markets and equipment procurement. With the growth pressure imposed by the Reciprocity Treaty, however, plantations required capital infusions in order to expand their cultivation into more marginal lands, leading to increased reliance on the agencies for credit. With Hawaii's annexed by the United States, this change was locked in as sugarcane plantations gained a new infusion of investment. By eliminating tariffs imposed on sugarcane producers by the United States, planters had more money to spend on equipment, land and labor. Increased capital resulted in increased production. Five kingdom-era corporations benefited from annexation, becoming multimillion-dollar conglomerations that controlled 90% of the sugar business.