Except among the westernized upper class, people eat from a common plate or group of dishes

Answer: Im not 100% sure what you are asking but If you are asking whether this is true or false, then this is true because different cultures eat their own common food.

The people in the upper class ate a large amount of food because they were able to get more food.

Explanation:

The people in the upper class ate a large amount of food because they were able to get more food and the lower class and slave class barley had anything to eat because the upper class people didn't let them eat anything.