Mapping the emergence of agriculture, 9400-3000 b. c.e.

the following map illustrates the emergence of agriculture, which took place gradually over the course of thousands of years. according to
archaeologists, agriculture first arose independently in nine different locations around the world.
examine the map, select the label that best matches each legend item.

match

a
b
c
d
e

by 500 bce
by 3000 bce
by 4000 bce
by 8000 bce
by 6000 bce