Jared Diamond Quote

Not until the beginning of the 20th century did Europe's urban populations finally become self-sustaining: before then, constant immigration of healthy peasants from the countryside was necessary to make up for the constant deaths of city dwellers from crowd diseases.

Guns, Germs And Steel (ed. Random House, 2013) - ISBN: 9781448180202

Not until the beginning of the 20th century did Europe's urban populations finally become self-sustaining: before then, constant immigration of...

Not until the beginning of the 20th century did Europe's urban populations finally become self-sustaining: before then, constant immigration of...

Not until the beginning of the 20th century did Europe's urban populations finally become self-sustaining: before then, constant immigration of...

Not until the beginning of the 20th century did Europe's urban populations finally become self-sustaining: before then, constant immigration of...