Medicare and medicaid were enacted by the johnson administration in 1965 as amendments to which federal law already in existence? a. welfare act of 1960. b. social security act. c. employee retirement and income security act. d. managed care act.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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the united states presidential election of 1992 was the 52nd quadrennial presidential election. it was held on tuesday, november 3, 1992. democratic governor bill clinton of arkansas defeated incumbent republican president george h. w. bush, independent businessman ross perot of texas, and a number of minor candidates.