"After protracted clashes with his father and his brothers, Louis received the East Frankish Empire in the 843 Treaty of Verdun. His attempts to conquer the West Frankish Empire of his half-brother Charles the Bald in 858–59 were unsuccessful. The 860s were marked by a severe crisis, with the East Frankish rebellions of the sons, as well as struggles to maintain supremacy over his realm. In the Treaty of Meerssen he acquired Lotharingia for the East Frankish Empire in 870. On the other hand, he tried and failed to claim both the title of Emperor and Italy. In the East, Louis was able to reach a longer-term peace agreement in 874 after decades of conflict with the Moravians. Due to a decline in the written form in administration and government, Louis´ reign predates Ottonian times." - (en.wikipedia.org 31.01.2020)
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