Which has the highest authority- state law, federal law, or the constitution

What law allowed the united states to claim uninhabited islands?

Which was not part of the debate over going to war? a. president james madison tried to avoid war but was convinced by those who wanted it. b. new england ship builders wanted to go to war to save their buisnesses. c. most westerners and some southerners wanted to go to war to gain land. d. war hawks said they could march into canada and take britain's territory.

Space is not completely empty. there are small particles in space. what happens when these particles come together?