What are some reasons why the louisiana purchase was important to american history?

Me < 3 there are multiple ‘3rd party’ political parties in the us. what are the benefits of having 3rd parties? what are the disadvantages of being a member of one? would the u.s. benefit if there were more 3rd parties created, more support for the current ones, or would it be best to get rid of them altogether? why?

No mercy for the user europa2433 because he or she reports everyone. and its annoying. come on who agrees.

Lincoln fought to prevent secession from the united states of america. true or false?