Why is the enlightenment considered a turning
point in world history?
(1) the factory system was used to mass-produce
goods.
(2) martin luther broke away from the roman
catholic church.
(3) europeans changed their thinking about the
role of government.
(4) the columbian exchange occurred.

The Enlightenment is considered a turning point in world history for several reasons. The most important reason being:
3. Europeans changed their thinking about the role of government.
The Enlightenment was a philosophical movement which worked to change the conservative ideas in the 18th century. The main goals were liberty, tolerance, as well as ending the abuses of the Catholic church and the state. The Enlightenment movement in France was opposed to the principle of absolute monarchy and the rigid dogmas of the church. 

This is what i found on google “the first mobile phone call was made 40 years ago today. on april 3, 1973, motorola employee martin cooper stood in midtown manhattan and placed a call to the headquarters of bell labs in new jersey.” i hope this you for what your looking.