The right of the united states' national government to establish post offices, regulate commerce with foreign nations, and declare war, all on behalf of the constituent states, are referred to as which of the selections listed below?

As the coach of the u.s. olympic cycling team, i can state without question that the swedish and french teams were using illegal steroids. how else could they have beaten us so badly in the last competition? the u.s. team trained much harder and was much more skilled than our opponents. we only lost because a few teams cheated.

What was the result on the u.s. economy because of the major changes in atlantic shipping prior to and during the war of 1812?

How did the united states obtained the purchase of floridia to extand its frontiers to the pacific ocean