Considering the circumstances, in Episodes 39-40 England and France fight over ownership of a baby America. Eventually, America joins with England, and lives with him. I would believe that England is America's "father" figure because of this. Finding a new nation and taking him under your wing would not make him your brother. Such as China found Japan, and Japan is referred to as China's child.
I would have to say they are brothers. Americans in general are of European descent, especially England. An example is Norway and Iceland, they are brothers because Norwegians originally found Iceland.WonderfulAsia 12:59, September 18, 2010 (UTC)
This is actually a really great question. It depends on how you want to define The United States of America, himself, as well as the terms 'father' and 'brother.' If you think about who first "discovered" America--it wasn't either England or France, but Sweden and Finland (in the anime, at least; for historical purposes, you'd also have to take into account probable discoveries by China and Italy--with Columbus having been preceded by Leif Ericson and the Norse, etc.); in fact, you'd have to think about pre-settlement America being inhabited primarily by Native Americans and go into the whole unsolved mystery of how nations are born in the first place.
For the purposes of accuracy and simplification, however, we can say that the Nordics were the first to notice and drop by, Italy was the first to inform the "Old" world of the "New World," and England and France were the first long-term settlers and/or explorers of the area.
While France did influence American culture, the North American brothers were primarily raised by England (...after, you know, he killed and/or relocated most of the east-coast tribes... *ahem*): American law, literature, language, and even attitude were based off of and are STILL linked very closely to that of Britain's. The original thirteen was settled by the British, and those who expanded inward were -mostly- of British descent; that fact alone makes one wonder if you could use the term "blood-related" to describe England's relationship with America. Irrespective of later immigration, it's not unreasonable to think of them related at least partially by 'blood' (which would make any romantic pairing between the two somewhat incestuous).
As for the differentiation between if England was America's 'father' or 'brother,' there is no canon distinction (unless Himaruya suddenly decides to make one), giving fandom freedom to speculate. When they first 'discovered' America via Finland, both France and England argued over who would become America's "older brother," although after England took America into his charge, one could argue that he acted more like a father figure: being America's near-main source for income (also, IRL, controlling America's relationships/contact with the outside world/other nations; two things that greatly frustrated the colonies), cooking (very poor) food for him, almost undoubtedly providing him with some sort of education. Fandom goggles could also take that same evidence and simply point it to England being a very hardworking older brother, given his personality.
RANDOM HISTORICAL BLAH: This is, of course, mostly ignoring the historical basis of relations between the British Empire and its colonies; early North American history is an interesting but somewhat, um, depressing read. England never intended to settle the area, after all, and was mainly looking to find a root for new business--eventually exploiting the eastern coast for tobacco. The reason why the American Revolution came as such a shock to the Empire should not be surprising to anyone: despite the exploitation, the colonists were spoiled like crazy with an extensive list of rights and privileges allowed through physical distance with the motherland and, well, British disregard... Their colonial policies were almost the exact opposite of Spain's, in this aspect. Himaruya was not entirely wrong when he said that America, from the beginning, was pretty self-sufficient. Modern day interpretation could read as England/the UK being very close allies ('friends') with America, with a tendency to act as both father and older brother depending on if it's general or military matters being discussed.
WTFTL;DR: It's not established by canon, so you can read it either way.
well really there not blood related but i geuss Englands Americas older brother but he's also a farther figure and i base that on absolutly nothing :D
There is a lot of confusion about it, but this is how I see it.
Albion (ancient britain)
Scotland-England-l-London(fanmade by me)-Wales-Sealand-Ireland
If you know what I mean