The Highland Clearances of the 19th century destroyed communities throughout the Highlands and Islands as the human populations were evicted and replaced with sheep farms. For example, Colonel Gordon of Cluny, owner of Barra, South Uist and Benbecula, evicted thousands of islanders using trickery and cruelty and even offered to sell Barra to the government as a penal colony. Islands such as were completely cleared of their populations and even today the subject is recalled with bitterness and resentment in some areas. The position was exacerbated by the failure of the islands' kelp industry, which thrived from the 18th century until the end of the Napoleonic Wars in 1815 and large scale emigration became endemic. For example, hundreds left North Uist for Cape Breton, Nova Scotia. The pre-clearance population of the island had been almost 5,000, although by 1841 it had fallen to 3,870 and was only 2,349 by 1931.