A more thorough explanation:

A sweepstakes is a type of contest where prizes are awarded based on random selection of entries. It is often used for promotional purposes.

For example, a company may hold a sweepstakes where people can enter to win a free vacation. The winner is chosen at random from all the entries received.

It is important to note that sweepstakes must follow state and federal laws to prevent fraud. It is illegal to use a sweepstakes as a way to obtain money or property through false representations.