A more thorough explanation:

The United Nations Convention on the Rights of the Child is an international agreement that outlines the rights of children. These rights include civil, political, economic, social, and cultural rights. The Convention was adopted by the United Nations General Assembly on November 20, 1989.

For example, the Convention states that every child has the right to education, healthcare, and protection from violence and abuse. It also says that children have the right to express their opinions and be heard in matters that affect them.

However, not all countries have ratified the Convention, including the United States. This means that some children in these countries may not have access to all of the rights outlined in the Convention.