<u><em>The Articles of Confederation granted to every states its own freedom and sovereignty. The Congress of the central government didn’t fee taxes or regulate commerce. </em></u>
<u><em>This is one of the reason why the states could tax tariffs on other’s states’ goods, that caused arguments between the states
</em></u>
The United States was willing to pay more per mile for the Gadsden Purchase than for the Mexican Cession because the Gadsden Purchase gave money to the United States to build a railroad.