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Fossil Fuels have made manned space exploration possible.
There are quite a few devices that have made sea exploration as you know it possible. Submarines are one of these devices.
Columbus
The two sailing inventions that made the Age of Exploration possible were Caravel, and the Galleon.
Techonlogical inventions which made the Age of Exploration possible included a sextant, which sailors used to navigate by the stars, and a compass.
The Caravel
the coronol, a spyglass for navigating
Bathyscapes and submersibles have.
2002
The compass and the astrolabe made navigation by sea, and therefore exploration, possible.
the coronol, a spyglass for navigating
sail boat