Who confirms supreme court nominees?

Article Two of the United States Constitution requires the President of the United States to nominate Supreme Court Justices and, with Senate confirmation, requires Justices to be appointed.

a) which ethnic groups live in this community?

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the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.