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Of great importance today is the subject of town planning. Throughout the nineteenth century in all industrial countries of the world the same thing occurred. In England, in the middle of the nineteenth century, one-half of the population lived in towns; the other half lived in the country. By the end of the century there were nearly a 20 million increase in the number of country dwellers.
Towns grew in a haphazard way. Houses were huddled together, and railways had found a way in, often to a most inconvenient part of the town. There was no plan in the arrangement of the town.
In Great Britain a Town Planning Act was passed in 1909, giving to local authorities, for the first time in history, power to develop their towns along scientific and artistic lines. After 1918, schemes of building on a national basis began in most countries.