Answer:
D. Stratification based upon race and ethnicity is highly pervasive and affects all aspects of political, economic, and social life.
Explanation:
When the members of the society are classified according to the socioeconomic strata, it is said to be the process f social stratification. It is a form of differentiation on the grounds of social status, occupation, and income of the individuals. Stratification is the position which an individual holds within a defined social group or geographical area.
Both a and c are reasonable answers, but c is your best.
Freedom of Speech & Freedom of press ... the first Amendment
The correct answer to this open question is the following.
Considering that the U.S. was engaged in the Cold War with the Soviet Union at this time, the reason why might President Kennedy had chosen to include this line about leadership in his speech was that the Soviet Union had already launched the Sputnik spacecraft into space. This represented a notorious advantage for the USSR against the United States as the two rivals during the Cold War years. The US could not fall behind its worst enemy in those years, that is why President Kennedy decided to heavily invest in the space race program and shorten the distance with the USSR.
Trading allows us to also have a way of cultural connections in which we share our races and religion and spread awareness of it. So many people would have got to know Islam through trading due to cultural connections. Hope this helped!!