Answer:
Explanation: Your image didn't load for me, however failing world history sucks.
In this quote, Thurgood Marshall is talking about the time between the signing of the Emancipation Proclamation (which was supposed to free slaves in the Confederacy) to the Brown vs. Board case which ruled that "separate but equal" is unconstitutional.
The reason he brings up these two events is because it shows how little progress American society has changed in these 90 years. Even though African-Americans were supposed to be free citizens after the Emancipation Proclamation, they were still treated as second class citizens in the US. They were constantly targets of voter discrimination, violence, and prejudice.
The correct answer is - A. Cecil Rhodes and Leopold II traveled into the interior, showing other European leaders that such journeys were advantageous.
Rhodes and Leopold II in a way opened the gates for the European leaders to have the desire and go to the interior of the African continent. It was not just because of the possibility to do so because the African tribes were by far disadvantaged technologically and military compared to the Europeans, but it was the treasures that the continent was offering and how easy was it to get to them and use them for trade and become wealthy. That lead to a major colonization of the continent by the European colonial powers, and they took full advantage of the natural resources Africa had to offer.
China's increased conflict with the soviet union :)
