A type of weeds used to build boats in the past were rushes. These look like tiny sticks of bamboo, are hollow, and they float. They are not suitable for large boats, but can be used to make rafts and very small boats.
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Concrete, glass, wood and steel were used to build the Calgary tower.
Explorers all over used boats and canoes, the boats consisted of sails. The European explorers got the idea of using canoes from the Indians. They also flapped their arms and flew faster than a butterfly.
to build historical homes
iron and wood
It was mostly a mud-brick city.