Which part of the Constitution has most helped the document adapt to changing times?

The Constitution—in particular, the first ten amendments forming the Bill of Rights—protect the liberties and rights of individuals. It does not limit this protection to citizens or adults; in most cases the Constitution simply refers to “persons” which over time has grown to mean that even children, visitors from other countries, and immigrants—permanent or temporary, legal or undocumented—enjoy the same freedoms as adult citizens within the United States or its territories . Neither Japanese tourists visiting Mt. Rainier National Park nor visitors exceeding the limit of days allowed on their visas sacrifice those liberties. In everyday conversation, we often treat freedoms, liberties, and rights as effectively the same thing—similar to how separation of powers and checks and balances are often used interchangeably, when in fact they are distinct concepts