id say about half way through the main quest.
Far Above Cayuga's Waters was created in 1870.
The Master's Cathedral was only acessible in Fallout 1, and is too far West to be included in New Vegas.
As far as I can tell, the only thing you can do online in Fallout 3 is get updates, patches, and buy downloadable content.
Fallout 3 is not cheap - far from it as it is a brand new game. The price will come down over time.
there isn't a commonwealth in Washington dc its north of dc so it isn't in fallout 3 so far
No you only get one dogmeat and he is in a junkyard not far from minefield
As far as other people know. Probably. Because they have so many people who like Fallout New Vegas, that if they make another one; everyone would want it. Hope that will get you exited! :)
a day apart
There will most likely be a Fallout 4. Also, there are plans for a Fallout Mass Multi-Player Online Game (MMO) but the rights of making the MMO are under the legal debate between Interplay (Makers of Fallout 1,2,Tactics,Brotherhood of Steel) and Bethesda (Makers of Fallout 3 and publishers of Fallout:New Vegas). Also Bethesda purchased the rights and now own all the rights (legally debated) of the Fallout Franchise and told reporters that they were going to DEVELOP at least 3 Fallout games (Fallout 3, Fallout:New Vegas, and Fallout 4, which is far from being released). There will probably be more Fallout games (hopefully because they are my favorite games, Fallout 3 FTW!!) and they will probably be developed by Bethesda.
no
Washington D.C. is really far away from Boston and water doesn’t connect the two
Howfar sultan success in his mission