The correct answer
here is D. Johann Tetzel started selling indulgences Wittenberg to anyone who was
be kind enough to donate the money for the reconstruction effort in Rome where
they were rebuilding the Cathedral of St. Peter. This prompted Luther to nail
his famous 95 Theses on the door of the Church in Wittenberg as Luther believed
that faith alone is enough to grant salvation through Jesus Christ. This would
later start the great wave of Protestantism.
Missiles. Soviets developed ICBM could reach U.S. and carried nuclear weapons, space, CIA used U-2 aircraft that flew so high they couldn't be shot down but was shot down in 1960.
The number of Greek Gods is huge since the ancient Greeks believed in many deities and spirits. Gods and goddesses could be found everywhere and defined the lives of the people. The twelve gods of Olympus are the most famous ones and were indeed at the center of the ancient Greek religion. However, there were many more than the twelve, and many of them were rulers of the cosmos before the well-known Olympians.
The Greek Gods that existed then were the Primordial Gods. The famous work of Hesiod, called Theogony (meaning “birth of the Gods” in Greek), presents a complete cosmogony. Natural forces are personified and the most basic components of the cosmos are Gods
Hope this helps!!