They feared that more populous states would have a sort of monopoly on elections and that it was best for all states to have the exact same powers as other, smaller states.
It helped expand America and helped other nations realize they should now be independent as they were influenced from their neighboring nations. They all began to become Independent which slowly ended isolationism.
The military force used "containment and rollback phase". This happened on March 1958 where the Vietnam war had both aspects. It divided the Vietnam into two- north and south; the North Vietnam did rollback while the South Vietnam adopted containment operation.
One of the archetectural features from the greeks is columns.