I’m (sadly) pretty monolingual, but as an historian by training find things like this fascinating:
Regardless of who originally penned the idea, the new letter resulted from an unusual convergence: the Swedish Å owes its existence to a major religious reformation, a groundbreaking technological invention, the founding of a brand new nation, and the ever-flowing tide of phonetic evolution and language modernisation.
The post continues with a discussion of ‘diacritical marks’ used in other languages such as German and Czech. The author, who is also a type designer, has promised a follow-up post on uses of the letter ‘Å’ in contemporary typefaces.
Source: Frode Helland