Mosque: a Muslim house of worship
Astrolabe: a tool that helps sailors navigate by the positions of the stars
Confirm: to prove that something is true; to remove doubt
Minaret: the tower of a mosque from which Muslims are called to prayer
Publish: to produce the work of an author, usually in print
It took Shah Jahna's workers and craftsmen more than 20 years to build the Taj Mahal.
Muslims also make contributions in mathematics.
Islamic civilization made important contributions to science, learning, and philosophy. This astrobale advanced the Greek invention.
From the 700s to the 1400s, scholars in Muslim lands preserved learning of the ancient world.
People in the Muslim world were divided into social groups based on their power and wealth.