How did the outcome of the war of 1812 effect the development of the united states?

It caused no immediate boundary changes.

Explanation:

The main result of the war was two centuries of peace between the United States and Britain. ... American fears of the Native Americans ended, as did British plans to create a buffer Native American state.

-an amendment is proposed.

-two-thirds of congress must approve.

-thee-quarters of states must approve.

-the proposed amendment becomes law.

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for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: