Explain how, according to hinduism, someone can be reborn into a higher caste.

If you complete a heroic task, do something great for your empire, or do a good deed in some sort of way, you will be born to a higher cast in your reincarnated life. For example, if you were a Shudra, and you saved your king, you could be reincarnated to be a Kshatriya/Brahmin.

Explanation:

I hope this helps!

a. men

and during later times male slaves as well