The principal industry of Sri Lanka during the pre-colonial period, which expanded from the 6th century BC to 1505 AD, was agriculture or wet paddy farming; However, a major change in Sri Lanka's industries can be seen during the colonial period, which spans from 1505 to 1948 AD. The colonialists who occupied the nation before the British were Portuguese and Dutch began commercializing Sri Lanka profiting from cinnamon and from other spices available locally with low overall cost, but made profits in Europe due to scarcity and demand in the market. raw materials (Publicazioni, 2008, p. 129). According to J. W. Bennett (1843): Local revenues are derived from duties on cinnamon, salt, tobacco, fish farms, pearl and cane fishing (Current gravis), marriage and liquor licenses, judicial and commercial stamps, fines, land commutation tax , auction duties, postal receipts, boat rental and pilotage charges, anchoring dues, sale of gunpowder, horses from the government stud farm on Delft Island, Ceylon Gazette and Calendar, house and land revenue, premiums on sale of Treasury bills, timber, Veddah tribute and customs duties on exports and imports. (p. 45) Furthermore, with East Indies Trading, a company based in India, other industries were also traded, which were transported locally for individual needs or for trade between each other such as spices, pearl fishing, areca nuts, gems, elephants and coconuts. (Nubin, 2002, p. 176). However, the great boom in marketed productions, mainly commercial agriculture, was first introduced in Sri Lanka during the period of British occupation between the years 1796 to 1948 AD. Horatio Suckling (1876): with a few exceptions, such as the plumbago, the same type of pr. ..... half of the paper ...... were the main commercial agricultural products until the end of the British era, which came with the independence of Sri Lanka in 1948. The British settlers during their colonial rule introduced the their main cash crops in their colonies such as India and Kenya, and which shared many tea-like trade products under the British. As a result, with many British colonies such as Sri Lanka gaining independence during the mid-1900s, nations producing the same commercial products were plentiful. Hence, post-independence Sri Lankan leaders had to find new commercial products, which would attract the international market in subsidizing the economy. impact due to low demand for Ceylon tea, natural rubber and coconuts. Therefore Sri Lanka began to look for and experiment with opportunities in raw materials and services, which were more in demand internationally.