Search Result For propel
The day the bicycle was invented – level 3
12-06-1817The invention of the bicycle was a gradual process that took...
The day the plane was invented – level 2
17-12-1903People always wanted to fly. In the 18th century, it was...
The day the plane was invented – level 3
17-12-1903Since the beginning of our civilization, people have had a dream:...
