Briania was founded in January 2008 when a shape on a page was colored in Photoshop and posted on Deviantart. This Briania was the perfect country in founder Brian's eyes. It had forests preserved forever, an industrial lake made exclusively for polluting, so the oceans won't be disturbed, and it had urban cities and farming villages at the same time. After delving a little too deep into writing in detail about anything Briania (see Specs), he decided to take the micronation into the real world.

In the autumn of 2008, Brian and good friend Max went to the distant land of South Mikeistan (also known as Brian's brother Mike's house next door). They had found a small inlet in between the fenced off border of Mikeistan and the garage. That place is known as Little Briania. After hours of toiling with rakes, old rocks, and some bricks, the border to Little Briania was completed. The capital of real Briania was established as Brian's bedroom later that week, with a permanent population of 2 (Brian and his guinea pig).

When all of Briania's present territory was squared away, Brian decided to begin forming the cabinet. So he communicated with his close friends who had helped form Briania and asked them what position they would like in the Cabinet of Brianian Officials (COBO). Jesse responded with Secretary of Defense, so it was made so. Max, however, responded with "not now". So the new position of "Senior Executive of Not Now Affairs" was formed, with Max ruling it with an iron fist. Wilbur, being the only other permanent resident in the capital, was given both Director of Briania Animal Intelligence Agency and Secretary of Agriculture. Brian's other friend Charlie, wanting to wear an important robe, decided to be the Supreme Court.

In early July 2009, Chief Brian of Briania, Not Now Secretary Max, and King Charlie of Chuckleslovakia (former Brianian Supreme Court Justice) traveled through the woods a distance away from Brioom (Brian's room, the capital of Briania), and found a large, but traveled, lake in the middle of the woods. Brian found this place bountiful in wildlife, foliage, and mud (lots and lots of mud), and claimed it in the name of Briania. Charlie objected to this, however, and they both settled on a half-and-half split, the north half being Briania, and the south half being Chuckleslovakia. Conflict broke out that night between the two leaders, as Charlie claimed that Andy, a chuckleslovakian official, had previously claimed the entire lake as his, and said that "[Andy's] claims got transferred to me once he became Chuckleslovakian". The next day, Brian made an agreement with Andy to split the land in two once more (he didn't really care, anyway), and the two countries lived in peace.