Question

waterways is the cheapest mode of transportation . why?????

Answer 1

it is because in waterways we can transport the large amount materials with consumption of low fuel rather than airways and landways.
As the ships and boats are very easy example of the cheapest waterways as they consumed low energy or fuel and runs with the help of water.

Answer 2

Water ways is the cheapest mode of transportation because vehicles which goes by water it doesn't need any fuel or disel so doesn't need money so much so it is cheapest mode of transportation... hope it will help you dear....