Answer:
The use of wheel is the correct answer.
Explanation:
Olmec was the oldest civilisation of Mesoamerica and flourished from 1200 BC to 400 BC They mostly inhabited in the tropical lowland regions of south-central Mexico. The area inhabited by them lied in the states of Tabasco and Veracruz. Many of the Olmec statues and sculptures discovered till now were made of basalt stone. The workers used to bring the stones from more than a hundred miles away without the use of Wheel. They are also known for inventing 365 days calendar and earliest known mesoamerican pyramids. Olmecs were prosperous due to cultivation of corn and beans as both the groups grew very well in the fertile plains of coastal mexico.
