What is the main function of the central committee of the major political parties?

In the United States the two major parties are administered by the Democratic National Committee and the Republican National Committee; these act as the leading bodies of those organizations at the national/administrative level, as well as local committees in a similar capacity within the local Democratic or Republican

Explanation:

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a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

i think the answer is: cuba wanted to be independent from spain, and the u.s. wanted to end spanish rule in the west.

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-lavira : )