Indochina is a big area in Southeast Asia that includes countries like Vietnam, Cambodia, and Laos. It used to be a French colony a long time ago, which means that the French people owned and controlled it.
People in Indochina speak many different languages and have different cultures. They eat different foods, wear different clothes, and have different traditions.
During the 1900s, there was a lot of fighting in Indochina. Some people wanted to be free from the French people and be their own country. Others wanted to be part of the French colony. Many wars were fought between these groups of people, and lots of people were hurt or killed.
Eventually, the countries in Indochina became independent from France and started to make their own rules. They wanted to work together to make their countries better and stronger.
Today, Indochina is a beautiful and diverse region with a rich history and culture.