Which does not describe a change that took place between 1800 and 1821 to the boundaries of the united states?

What is the term for a short statement about history that has not been yet been proved

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a. creating terraces for farm fieldsb. practicing religious ceremoniesc. playing a ball game with stone hoopsd. protecting a city from invading armies

How does fortas defend the majority decision that free speech in school is constitutionally protected