What were the key aspects of the US-Iran deal involving sanctions?

The US and Iran made a special agreement to reduce some problems they had with each other, especially about sanctions, which are like big fines that stop people from doing business.

Imagine you have a lemonade stand, but someone put up a sign saying "No Lemonade Allowed", that’s like a sanction. It stops you from selling your lemonade and makes it harder for you to earn money. The US used this kind of sanction against Iran, making it hard for them to do business with other countries.

In the deal, Iran agreed to stop some bad behavior, like making nuclear weapons, a bit like when a kid stops throwing toys if they promise to be good. In return, the US and others took down those "No Lemonade Allowed" signs, letting Iran sell their lemonade again.

This helped both countries make more money and get along better, like two kids who stop fighting so they can play together.