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The German triplane was perhaps the best known plane in World War I.
The German engineer Otto Lilienthal was the first person to make successful flights with...
Commercial maritime routes of container ships form a global network.
Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.
The largest ocean liner at the time of its construction.
The Wright Flyer was the first successful powered, heavier-than-air aircraft, designed...
HMS Dreadnought revolutionised battleship-building in the 20th century.
This animation demonstrates the most important equipment of ambulance cars.