The use of chariots in the hunger games suggest that the contestants are being compared to

Gladiators

Explanation:

In hunger games,  the story revolve around a group of people who were told to fight to the death in order to represent their district. It's all only for the amusement of the elites.

Their fate is similar to Italian Gladiators. most of them were slaves captured by the Roman soldiers. They were told that they might obtain their freedom if they fight each other for the amusement of the nobles.

The used of chariot was created to signify the similarities between the two condition.

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."