the rudder
the rudder
the rudder
astrolabe
light house or gps
a compass
The invention of cars helped people by let them travel someplace farther away from home. They won't have to walk all the way over there anymore.The invention of cars helped people by let them travel someplace farther away from home. They won't have to walk all the way over there anymore.
An astrolabe helped sailors because it could determine any direction based on the position of the stars. This is why the astrolabe helped sailors.
luna
the invention of the printing press
It was the invention and usage of a zero symbol
Sailors?
Polaris, the North Star.