Why is the louisiana purchase treaty an important document in the study of manifest destiny

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?

How did the incas unite the andes mountains?

Concerns about the environment prompt congress to pass a $1 surcharge tax on each gallon of gasoline. which statement best describes the impact of such a tax