It is one of the mightiest rivers of the .continent.
Moreover, the mightiest secular ruler was but a poor sinner dependent for his eternal welfare on the Church and its head, the pope, who in this way necessarily exercised an indirect control over the civil government, which even the emperor Henry IV.
Mission work commenced in Bulgaria during the latter part of the 9th century; thence it extended to Moravia, where in 863 two Greek missionaries - Cyril and Methodius - provided for the people a Slavonic Bible and a Slavonic Liturgy; thence to Bohemia and Poland, and so onwards to the Russian kingdom of Ruric the Northman, where about the close of the 10th century the Eastern Church " silently and almost unconsciously bore into the world her mightiest offspring."
Pisa, one time the mightiest, had been crushed between its inland neighbour and its maritime rival Genoa (battle of Meloria, 1282).
The Murtagh chain, which holds within its grasp the mightiest system of glaciers in the world, forms a junction with the Sarikol at the head of the Taghdumbash, where also another great system (that of the Hindu Kush) has its eastern roots.