Complex sentence: In late 1940s, so as to influence textile and oil seed production in West Africa, United Kingdom authorities imposed a country by country quota on Cotton imported from Africa, this situation created the impetus for A.G. Leventis to establish a branch in Nigeria.
Split into simpler sentences: In late 1940s, United Kingdom authorities imposed a country by country quota on Cotton imported from Africa, this was intended to influence textile and oil seed production in West Africa. The situation created the impetus for A.G. Leventis to establish a branch in Nigeria.