The Helots were Greeks that had been captured and enslaved by Spartans. The Helots performed many important duties in Sparta, including working on the land to produce food.
The Helots were incredibly important in the social structure of the Spartan society, because each Spartan householder needed to contribute a certain amount of food for the messes, and without the Helots tilling and taking care of the land, this could not be possible.
But the Helots were considered as the lowest class in the society and kept under constant watch.
I believe that the three levels are:
1) primary or extractive: getting the resources. this includes for example producing milk (milking cows)
2) secondary: manufacturing: packaging the milk and treating it
3) tertiary: providing a service, for example bringing the milk to people's home!
light,it receives,sun,
I know three blanks sry if it's wrong
Answer: Mexico city is in central America
Explanation: this question is a little bit tricky since Mexico (the country) in general is located part in North America and part in Central America. However, Mexico city which is the capital of Mexico is definitely located in North America.