Waterways were an important means of transportation in Ohio in the 19th century. How did Ohioans modify their environment to improve transportation on their waterways?

They linked canals with the river.

Explanation:

In 1832, the government of Ohio dig canals about 309 miles and linked these canals with the Ohio River which speedup Ohio's economic growth because transportation system was improved and goods were easily transported to other countries. Transportation plays a vital role in the economy of a country if transportation is expensive so people avoid sending goods to other regions and less money was earned by the country due to less exports.

they remained in rural areas and worked at jobs such as lumbering or farming.

uncle sam would be tossing and turning in his grave : *)