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The ………………. are the best suited for agriculture.

plains are more suitable for agriculture than plateaus and mountains because these are more fertile. Due to the presence of rivers, the irrigation is well developed in plain areas. The topsoil on the plateaus also get washed away and is deposited on the plains making it more fertile for the agriculture. Plain fields are difficult to be found in the mountains, and also there is excessive rainfall and snowfall which affect crops adversely.