The Germanic languages are a group of Indo-European languages. They came from one language, Proto-Germanic, which was first spoken in Scandinavia in the Iron Age. Today, the Germanic languages are spoken by around 515 million people as a first language. English is the most spoken Germanic language, with 360-400 million native speakers.
The Germanic languages are the East Germanic languages (all extinct), the North Germanic languages, and the West Germanic languages.
When Proto-Germanic split from Proto-Indo-European, one of the main changes in the sounds in the language was Grimm’s law.