Indianapolis is a city in the United States of America. It is the state capital and the most-populous city in the state of Indiana.
The state of Indiana was settled by Native Americans thousands of years ago. In 1816, the United States government bought land from the Native Americans and built a new city there. The city was named Indianapolis, which means "Indian Land" in Greek. The government gave the land to the people of Indiana, and they decided to make Indianapolis their capital city.
Indianapolis is nicknamed "Crossroads of America" because it is near so many other big cities. It is also nicknamed "Railroad City" because it was built along a railroad track.
Indianapolis is the 17th most populous city in the United States. It is also the 3rd most populous state capital in the United States after Phoenix, Arizona, and Austin, Texas.