The northeastern United States is a part of the country that includes states like New York, Pennsylvania, New Jersey, Connecticut, Massachusetts, Rhode Island, New Hampshire, Vermont, and Maine.
If you look at a map, it's the part of the country that's up near the top and to the right.
The people who live there have their own way of talking and their own food and traditions. For example, in New York City they have hot dogs and pizza, and in Maine they love to eat lobster.
The northeastern United States also has big cities like Boston, Philadelphia, and New York City, where lots of people live and work. But there are also small towns and countryside areas where people live more quietly.
Some famous landmarks in the northeastern United States include the Statue of Liberty in New York City, the Liberty Bell in Philadelphia, and Cape Cod in Massachusetts.
Overall, the northeastern United States is a big and diverse place with lots to see and do.