D) the United States and the Soviet Union
<span>While gladiator fights and chariot racing stayed quite popular, the mediums with which art was made changed. Due to the expansion of public schooling, poor children were afforded the same education as the rich, led to the highest literacy level in years. Polo became very popular, even though only nobility was allowed to participate.</span>
D because the president at the time was against racism but the southern governor of Arkansas was for it.
Technology is probably the answer that you need. Other answers such as internet, cell phones, and airplanes are suitable answers as well.