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Answer: B. Huayana Capac was the most successful ruler of the Inca.
Explanation:
A successful ruler can be judged by many things and in the past one very important metric for being successful was increasing the area of your country. People like Augustus, Alexander the Great and Genghis Khan were therefore very successful leaders.
In that same vein, Huayana Capac was the most successful ruler of the Inca according to this map. Under him, the Inca empire grew significantly as he added areas in modern day Chile, Bolivia and Argentina to the empire.
Explanation:
The Space Race was considered important because it showed the world which country had the best science, technology, and economic system. After World War II both the United States and the Soviet Union realized how important rocket research would be to the military.