... large as 50,000 inhabitants, but by 182 0 it had a city of more than 10,000 people, and by 188 0 it had recorded a city of over one million It was not until after 182 3, after the mechanization of the ... were extracted (5) before 187 5, when undertaken that established the significance of this remarkable site excavations were undertaken that established the significance of this remarkable site The ... the new labor-saving equipment In 186 0 there were approximately 80 ,000 reapers in the country; five years later there were 350,000 After the close of the war in 186 5, machinery became ever more...