Answer:
d. The emergence of 17 independent African nations.
Step-by-step explanation:
The year 1960 was referred to as the Year of Africa mostly because of the emergence of 17 independent African nations. And with this new freedom from their European "rulers", the Africans began learning and experiencing what life is like being free.
While freeing oneself from foreign powers had gradually taken force, Africa remains to be under powerful European influence. But with many revolutions and independent fights around the world, most famously the Indian nation, Africa also began fighting for their freedom. And in 1960, 17 African countries declared their independence from the European powers that had been ruling over them.
Thus, the correct answer is option d.