Does the sentence need a comma? If so, where? The sentence directly addresses Mrs. Cortez. Mrs. Cortez our neighbor is from Mexico.

Yes, put a comma after Cortez.
Yes, put a comma after Cortez and after neighbor.
No comma is needed.

put a comma after cortez and after neighbor

Explanation:

the first forms of writing came from them in the form of pictographs around 3100 bc.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.