The answer is letter c. ball courts.  The ball courts were from the Aztecs.  The rest of the choices were all practiced by
the Mayans.  Still the Aztecs and the Incas
also had some similarities in terms of agriculture as well as science and math.
 
        
                    
             
        
        
        
Answer:
measles, smallpox, influenza, mumps, typhus, and whooping cough
Explanation:
 
        
             
        
        
        
Answer:
U.S. civil service reform was a major issue in the late 19th century at the national level, and in the early 20th century at the state level. Proponents denounced the distribution of government offices—the "spoils"—by the winners of elections to their supporters as corrupt and inefficient. They demanded nonpartisan scientific methods and credential be used to select civil servants. The five important civil service reforms were the two Tenure of Office Acts of 1820 and 1867, Pendleton Act of 1883, the Hatch Acts (1939 and 1940) and the CSRA of 1978.
Explanation:
 
        
             
        
        
        
The revolutionary movements in various colonial and semi-colonial countries, which appear in different forms but which all have a profoundly anti-imperialist character, have caught the attention of the whole world.
From Morocco to Korea they have made themselves known to a greater or lesser extent and they are of a great concern to the capitalist governments, which realise that the capitalist development in these large and quite often densely populated countries is of utmost importance for maintaining the capitalist system.
As world imperialism has developed capitalism further in these areas, the masses of workers and peasants hit by capitalist penetration play a bigger role. For a long time the revolutionary nationalist movement in China had a mainly military character, such as the revolt of the Riff-inhabitants [2], which at present under Abd-el-Krim manifests itself mainly as military resistance. As in China the capitalist system penetrated deeper, thus developing a significant industry in several areas in this large country, the proletarians of these industrial areas have grown in significance in the struggle against the imperialism of various countries. In Indonesia a massive peasants’ and workers’ movement developed even before the World War.