D. All of the Above is the correct answer
Lyndon Johnson took office after the assassination of John F. Kennedy with an ambitious plan for eradicating poverty in the United States.
But the war in Vietnam got in the way.
The War in Vietnam largely derailed Johnson's War on Poverty as the War in Vietnam quickly took away the funding for some of the key programs and overshadowed the accomplishments in the nightly news.
The ayllu itself was the basic social unit, so the ayllu SYSTEM would have to be a system of social class. I believe that C is the answer.
Answer:
signaled the end of Communist domination of Eastern Europe.
Explanation: