I wouldn't exactly say damage. they polute the river with the gas, unless you're talking about a regular paddle boat: they don't cause mug unless they themselves are damaged and the pieces harm the wildlife living in the rivers.
boats
Because in older times trade was done via boats therefore the bigger trade cities had to be near rivers so the boats could come up the rivers from the sea.
Water. Along with fish, swimmers, boats.
Rivers provided water - for agriculture and drinking. Boats on the rivers also provided a means of communication.
yes
killing small children
They paddled their oars.
Torpedoes did the damage; under-water damage, the worst kind of damage for anything floating on water.
they use boats in the rivers and goats in the roads
beacause its have a many damage can be the rivers in Asia
beacause its have a many damage can be the rivers in Asia
Add the rivers velocity to the boats velocity