What is the difference between canals and rivers?

The main difference between a canal and a river is that a river is a natural flow of water while a canal is man-made. A river by definition flows from inland into the sea while a canal is most often constructed to connect existing rivers, lakes or oceans.

A river is a natural flow of water, while canals are man-made. Rivers also usually flow into bigger bodies of water, such as seas or oceans, while canals were built to connect rivers.

If your answers look like this a) expansion through conquestb) development of a calendar c) development of a written language d) creation of a large road workthen the answer is dhope it