The American Revolution, 1775–1783, and its attendant food decline resulted in 3100 hectares cleared in Newfoundland. In the early 19th century Irish immigrants began arriving who cultivated the land in Newfoundland. A very small percentage of the land is suitable in Newfoundland and Labrador for horticultural or crop production because there is a lot of forested and tundra geography. The province has some dairy production and farming concerns. Following World War II, farm training was available at the Government Demonstration Farm. Bonuses were paid for such things as the purchase of pure-bred sires, land clearing, and agriculture exhibition assistance to name a few. The industry of fish processing for food is the largest agricultural contribution from Newfoundland. Newfoundland fisheries, supply cod for the most part, followed closely by herring, haddock, lobster, rose fish, seals, and whales. The fishing industry depends very heavily upon exports and world conditions.