Why would some say that Rome was the highest product of the ancient world?

Rome not only conquered the most important countries of its time but also made these countries united people so that the ancient world became at last the Roman World. The ideas, customs, arts, and institutions were welded together into what we call Roman Civilization.

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explanation:

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.