<em>Srinivasa Ramanujan FRS was an Indian mathematician who lived during the British Rule in India. Though he had almost no formal training in pure mathematics, he made substantial contributions to mathematical</em><em>.</em>
<em>Indian mathematician Srinivasa Ramanujan made contributions to the theory of numbers, including pioneering discoveries of the properties of the partition function. His papers were published in English and European journals, and in 1918 he was elected to the Royal Society of London.</em>
Crop rotation is when a farmer changes the crops grown in the same field each year to ensure he gets the best harvest possible by not exhausting the soil of specific nutrients by repeatedly growing the same thing.
Europeans changed the economy from a model of producing foods for need to mainly the production of cash crops. All crops produced by Africans were exported and prices were set by the colonies. Africans were not allowed to grow these cash crops to benefit themselves.
<h2><em>Mexican migration increased during the 1910s and 1920s, pulled by U.S. needs for workers, particularly with the departures of Chinese and Japanese agricultural laborers, and pushed by the Mexican revolution and other upheavals. Demand for their labor dropped sharply with the onset of the Great Depression.</em></h2>
