 
<translate> Nkebi ahịrịokwu dị mkpa n'amaokwu ahụ bụ: Dị ka sayensị mmekọrịta mmadụ na ibe ya, sayensị ndọrọ ndọrọ ọchịchị nke oge a malitere ịkpụzi na ọkara nke abụọ nke narị afọ nke 19. Ya mere, azịza ya bụ na ọkara nke abụọ nke narị afọ nke 19. <eng> The relevant sentence in the passage is: As a social science, contemporary political science started to take shape in the latter half of the 19th century. So, the answer is the latter half of the 19th century. 