The two most important political parties in America are the Democratic and Republican parties. They have the most power - so much so that voting 3rd party is seen as a "wasted" vote.
A different question to ask would be "SHOULD we have political parties?", in which the answer would most likely be "no".
answered: Guest
There’s no picture, but i’ll give you a few of expeditions. lewis and clark began in 1804, louisiana purchase 1802, james town 1607