He proposes that the Bavarian influence entered the language after Yiddish speakers had migrated eastward.
At the same time of the appearance of metalwork, Indo-European speakers migrated to Italy.
Some British speakers migrated to Armorica and Galicia.
Finnish became a minority language in the west as well since many Finnish speakers migrated there (mostly for economic reasons).
Many Kam-Sui speakers have also migrated to farther urban areas such as Guangzhou.
As of 2005, it appears that a few speakers may have migrated across the Peruvian-Colombian border near the town of Leticia.
Lamba is also spoken in Lusaka, mainly because many speakers have migrated there for jobs.
Swedish speakers have migrated to many parts of the world.
Then its speakers migrated westward, coming into contact with speakers of Italic and Celtic.
Some speakers of this language have migrated to Katmandu.