It was the first in a series of partitions contributing to the dissolution of the empire created by Charlemagne and has been seen as foreshadowing the formation of many of the modern countries of western Europe.
Louis’ eldest son, Lothair I, was given the title of emperor but because of several re-divisions by his father and the resulting revolts, he became much less powerful.
When Louis died in 840, Lothair I claimed overlordship over the entirety of his father's kingdom in an attempt to reclaim the power he had at the beginning of his reign as emperor.
Since Lotharingia combined lengthy and vulnerable land borders with poor internal communications as it was severed by the Alps, it was not a viable entity and soon fragmented.
In 1766, it passed to France after the death of Stanisław Leszczyński, who had acquired the region from the German Habsburgs by the Treaty of Vienna (1738) ending the War of Polish Succession (1733–1738).
Finally, in 1945, after World War II (1939–1945), Alsace-Lorraine was solidified as French territory, which it remains to this day, more than a thousand years after the Treaty of Verdun.