Louis, the Pittsburg, Cincinnati, Chicago & St Louis (Pennsylvania system), the Baltimore & Ohio, the Ohio Central, the Norfolk & Western, the Hocking Valley, and the Cleveland, Akron & Columbus (Pennsylvania system) railways, and by nine interurban electric lines.
T he great manufacturing centres are Cleveland, Cincinnati, Youngstown, Toledo, Columbus, Dayton and Akron, and in 1905 the value of the products of these cities amounted to 56.7% of that for the entire state.
Most of the automobiles are manufactured in Cleveland; most of the cash registers and calculating machines in Dayton; most of the rubber and elastic goods in Akron; nearly one-half of the liquors and about three-fourths of the men's clothing in Cincinnati.
The largest cities are Cleveland, Cincinnati, Toledo, Columbus (the capital), Dayton, Youngstown, Akron, Springfield, Canton, Hamilton, Zanesville and Lima.
Cleveland's growth was, however, very slow until the opening of the Ohio canal as far as Akron in 1827; about the same time the improvement of the harbour was begun, and by 1832 the canal was opened to the Ohio river.