Complex sentence: He started business in the 1950's by exporting Hides and Skin, Rubber, Coffee and Shea Nuts.In the 1960's, he started a massive importation of cement from Egypt and Poland.
Split into simpler sentences: He started business in the 1950's by exporting Hides and Skin, Rubber, Coffee and Shea Nuts. During the 1960's, he started a massive importation of cement from Egypt and Poland.