9. This special group developed a number system based on 20 instead of 10 with many symbols to make numbers in different ways. (1 point)
Responses
Incas
Incas
Olmecs
Olmecs
Mayans
Mayans
Aztecs
1 answer
Aztecs
Responses
Incas
Incas
Olmecs
Olmecs
Mayans
Mayans
Aztecs
1 answer