According to Henry George, the main cause of poverty is the personal ownership and monopoly of the individual on the land. He writes, “In the great cities, where land is so valuable that it is measured by the foot, you will find the extremes of poverty and of luxury.
And this disparity in condition between the two extremes of the social scale may always be measured by the price of land. According to Marx, the main cause of poverty is the exploitation of the workers by the capitalists. According to Malthus, increasing population is the cause of poverty.