AThere were three different versions in total. The first one was Version 1.0. The cartridge was golden and common in Japan and the US. A very few copies also made it to Europe. And only that cartridge contains the Uncensored Version 1.0. Then the production was stopped. Two different cartridges in grey were released, Version 1.1 and 1.2. They looked the same and were the most common version, even in Europe. The game was slightly censored but some minor bugs were removed as well. Nowadays, the most common version is Version 1.2.
There's also a GameCube Version, which is actually the censored 1.2 ROM running on a Nintendo 64 emulator. The Wii version for the Virtual Console is also a 1.2 ROM running on an emulator. A detailed comparison between both versions can be found here.
ABefore time began, three Golden Godesses, Din (power), Nayru (wisdom) and Farore (courage), descended towards the land and created Hyrule. When they left for the heavens, they left the Triforce as the basis for Hyrule's providence. The Triforce grants the wish of the one that can claim it, so someone with bad intentions can use it for evil purposes. The Triforce was therefore kept hidden throughout history, in a place called the Sacred Realm. This Realm is said to reflect the nature of the one who can claim the Triforce. As described above, ages before the start of Ocarina of Time, the Temple of Time was built to guard the only remaining entrance to the Sacred Realm, and make sure that only the Hero of Time could enter it.In the beginning of Ocarina, Zelda asked Young Link to find a way to open the entrance to the Sacred Realm; that way, they could prevent the evil Ganondorf from obtaining the Triforce and using it to conquer Hyrule.Link succeeded in opening the door to the Sacred Realm, but Ganondorf secretly followed him into it. The Realm held Link for 7 years until he was old enough to battle evil, leaving Ganon free to claim the Triforce first; it made him the King of Evil, and, mirroring his heart, transformed the Sacred Realm into the Dark World. With his power, Rauru, the Sage of Light, was able to protect the Chamber of the Sages and Link within it from Ganondorf's evil.However, Ganon was deemed unworthy of the entire Triforce, as he only believed in power and his heart was thus unbalanced. As a result, it split in three parts, with Ganondorf keeping the Triforce of Power; the Triforce of Wisdom went to Zelda, and the Triforce of Courage came to Link. In order to obtain the Triforce in its entirety, Ganondorf would have to take the other two parts from Link and Zelda. Zelda and the six other Sages finally succeeded in locking away Ganondorf into the Dark World. However, everyone kept his part of the Triforce, explaining why the Triforce is usually divided over three people in the other games. Ganondorf would use his Triforce of Power to escape the Dark World several times in other games.
AYes, because several Zoras can be seen participating in the festivities in the closing cut scene. The six Sages watching the spectacle from the mountain contain an adult Ruto, proving that this scene occurs in the Adult Era, in which Zoras Domain was frozen, so the Zoras get out shortly after Ganon's defeat.
