What was the first Mesoamerican civilization?

Sole i will mark brainlist to who answer

Which one of the following statements best characterizes change to agriculture in the united states since 1900

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife