**PLEASE HELP FAST**
What was the most important historical effect of the astrolabe?
A. It enabled sailors to find their latitude.
B. It may have originated in Africa.
C. It made possible long voyages beyond sight of land.
D. It spread from Africa or the Middle East to Europe.
It allowed people to calculate the position of the Sun and other stars, meaning they'd be able to know what direction they're headed based on the sky, no land needed for reference.
