A pontoon bridge is a temporary bridge that you make by lining up a lot of boats crossways across the river, and then putting wooden planks over the boats to make a bridge. You can see one in the picture.
It’s a fast way to make a bridge so that you can get an army, or a lot of refugees, or any other group across a river quickly without too much trouble.
Learn by doing: build a pontoon bridge across a creek or your bathtub
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