The answer is D. North Africa
Needed a strong central government
1) Labna, Palace, vaulted passage
2) Copan stela A, Maudslay cast
3) Panel 3 from Cancuén
4) Yaxchilan Lintel 24
5) Stucco portrait of K'inich Janaab Paka
6) Stucco mask panels
7) Balamku
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The scientific scholars that are described by the details present in the question provided would be the political anthropologists. By definition, a political anthropologist is a scientist that mainly do his research in the field of analysing the history and the processes of politics as well as how it impact the society.
A) <span>On this day in 1956, the U.S. Congress approves the Federal Highway Act, which allocates more than $30 billion for the construction of some 41,000 miles of interstate highways; it will be the largest public construction project in U.S. history to that date.</span>