IT might be because that people are now starting to believe in bitcoin in a way that it is becoming more palatable than other cryptocurrencies just because of its longevity and that it is still higher than some of the other currencies. It might also be that the influence and popularity of bitcoin is spreading.
I think the hype of the fork is coming into effect. The news about Bitcoin Gold and the value or profit that a bitcoin holder can take once fork is done. Probably greed is driving Bitcoin market upward since more bitcoin means more coins on the forked chain which means a profit for them.
Yes, exact same thing that happened during the Bitcoin Cash fork.
On top of that the crypto market is getting bigger since Bitcoin is in the news almost every day now.
