History 04 lesson 15

Cranes, cranes help us build super high. They make it to where we can build skyscrapers, some of the highest buildings in the world. They are named after a bird the crane birds are tall and live in the wetlands. So they made cranes super tall and made it to where they can build. They are the tallest building tools in the world.

Dump trucks, dump trucks carry dirt or whatever it needs to to a location. They transport loose material such as sand, gravel, or demolition waste. Dump trucks have open box beds it has hydraulic rams to lift the front so the material can come out. Dump truck companies went big after World War 1because of all the damage done.

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