How do we know the olmecs were technologically advanced?
a. they created the first version of a calendar
b. they invented tools using stones and metal
c. they used latex from trees to create rubber
d. they were the first to use a writing system
How do we know the olmecs were technologically advanced?
a. they created the first version of a calendar
b. they invented tools using stones and metal
c. they used latex from trees to create rubber
d. they were the first to use a writing system