What is the biggest river ever made?

Answer 1

Rivers are not 'made'.

Longest River

The longest river ever to exist is The Nile. This is in Africa, and it's length in miles, approximately, is four thousand, one hundred and sixty, and in kilometres is roughly about six thousand, six hundred and ninety five. It's drainage area (square miles) is about 1,170,000 and the flow at the mouth of the river (cubic metres per second) is one thousand, five hundred and eighty four.

Biggest River

The biggest river ever to exist is The Amazon. This is in South America, and it's length is four thousand miles, and six thousand, four hundred kilometers. It's drainage area (square miles) is 2,270,000 and the flow at the mouth of the river (cubic metres per second) is one hundred and eighty thousand.