What is it called when a change happens in the constitution

A convention to propose amendments to the United States Constitution, also called an Article V Convention or amendatory convention

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veto bills

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“the battle of stalingrad is not a turning point necessarily in strategic terms, because a lot more has to be done before the soviets can be certain of defeating germany,” says renowned world war ii historian richard overy. the germans had fought nearly a thousand miles across the soviet union to get to stalingrad.