Travel on America's rivers increased after which year?

The Mississippi River is the largest river system in the United States,at more than 2300 ... It has stood in the path of discoverers, challenging their ingenuity to cross it.

Explanation:

hope we can be friends

can i get brainliest

please

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.