The Native Americans taught the Pilgrims planting techniques.
Air pollution also can be cause by the Sierra madre Mt.
The Three-Fifths Compromise, which meant as slave ownership was legal and most of the southern states own slaves. Due to the representatives they needed to have, only three-fifths of the slaves in each state would add up to the population.
Another compromise was the Great Compromise or the Connecticut Compromise which stated to create a bicameral or two houses to represent the states by population, the house of representatives and equally which was the senate.
The region aded from 1803 to 1819 to US were:
-in 1803: Louisiana
-in 1810: West Florida
-in 1818: Red River
-in 1819: East Florida