He made him leave the Shire with Frodo.
Gandalf goes to Minas Tirith in Gondor to research the One Ring. There Lord Denethor grudgingly allowed Gandalf to search among his hoarded scrolls and books. And there he found the description of the One Ring written by Isildur.
Frodo did volunteer. It was Gandalf's belief that the ring chose him, and possibly knew it would destroy him to take it away. Also, Gandalf had a high regard for Hobbits, and that they could resist it's temptation longer than any of the other races, because of their lack of desire for power.
The ring makes him invisible. The dagger is an elven blade and glows in the presence of orcs and goblins.
No, Sauron is. Addendum: This is explicitly stated in Rivendell. After Frodo recovers from his shoulder wound, he is greeted as "the Lord of the Ring" by Pippin. Gandalf, who is also present, immediately rebukes Pippin for using that term and states that the only lord of the ring is Sauron. Frodo might be able to resist the power of the ring, but ultimately, he could never master the One Ring.
It was Galadriel (played by Cate Blanchett)
Had Saruman realized that Gandalf bore the Red Ring, he may have taken it from Gandalf.
That it was none of Gandalf's business. It was his ring and he could do what he wanted with it.
He is part of the fellowship of the ring. He acted as their guide. He was gandalf the grey and then he returns as gandalf the white in 'the two towers.' To add to that he is awesome!
Gandalf goes to Minas Tirith in Gondor to research the One Ring. There Lord Denethor grudgingly allowed Gandalf to search among his hoarded scrolls and books. And there he found the description of the One Ring written by Isildur.
Gandalf noticed the ring turning Bilbo crazy so he forced him to give it up and leave it behind
Gandalf.
Frodo feels a sense of responsibility and fear after talking to Gandalf about having the ring in his possession. He realizes the weight of the task ahead and the danger that comes with it.
The city of Minas Tirith in Gondor.
Gandalf
Bilbo gives his cousin Frodo the One Ring after being hard pressed to do so by Gandalf. In fact, Bilbo almost drew his sword on Gandalf.
just one ring to rule them all
Defeating the Balrog. Finding the one ring, Resisting the one ring. Swaying the Riders of Rohan.