no not all the regions, just johto and kanto
No. the only games that have multiple regions are g/s/c and hg/ss
You can't go to Hoenn in Pokemon HG/SS.
migrate from gba games and for joto trade from either hg or ss
It depends if you like the original Pokemon or the all-new Pokemon but ss and hg have more Pokemon but b/w only have 152 Pokemon, i am glad to help
To get the gb player in Pokemon hg/ss you must beat all 16 gym leaders then go to celadon and go to the condiminum and talk to the kid next to the globe
No, Sinnoh is not available in HG. But, if you have the Event Arceus, you can go to the Sinjo Ruins.
You can't in HG/SS. Only Johto and Kanto are accessible for travel. However there are many Pokemon from the Hoenn and Sinnoh regions within the HG/SS worlds normally and by playing their song on your pokedex's radio on certain days. This and several legendary Pokemon from those regions become available after completing special end game side quests. For more information on catching these Pokemon check out serebii in the related links.
You get rock climb after you defeat all the gym leaders.After that go to professor Oak lab in Pallet town and talk to him.
First you have to have all eight kanto gym badges then go to cerulean cave basement to find and battle mewtwo
hg get groudon and talk to professer Elm ss get kyoger and talk to professer Elm
nothing that's y i just stay with Pokemon ss or hg
it will but it will keep freezing you will have to wait for a patch to come out to fix that