Having set about to try again after the failure of his first attempt, Charles has had the term proles (offspring) inserted into his charters as it had not been in previous years, probably because he desires to legitimize Bernard.

Charles had met the new Pope, Stephen V, in early 886 and had probably negotiated for the recognition of his son as his heir.

An assembly had been planned for April and May of the next year at Waiblingen.

Pope Stephen cancels his planned attendance on April 30, 887.

Berengar, who by a brief feud with Liutward had lost the favor of the emperor, arrives at Waiblingen in early May 887, makes peace with the emperor, and compensates for the actions of the previous year by dispensing great gifts.

Charles the Fat had probably abandoned his plans for Bernard and instead adopted Louis of Provence as his son at an assembly at Kirchen in May.

It is possible, however, that the agreement with Louis was only designed to engender support for Bernard's subkingship in Lotharingia.

In June or July, Berengar arrived in Kirchen, probably pining to be declared Charles's heir; he may in fact have been so named in Italy, where he will be acclaimed (or make himself) king immediately after Charles's deposition in 887.

Odo, Count of Paris, may have had a similar purpose in visiting Charles at Kirchen.

On the other hand, the presence of these magnates at these two great assemblies may merely have been necessary to confirm Charles' illegitimate son as his heir (Waiblingen), a plan which failed when the pope refused to attend, and then to confirm Louis instead (Kirchen).

Pietro I Candiano follows Orso I Participazio and Giovanni II Participazio as Doge of Venice, elected to the throne in about April 887at the side of the elderly, and beloved, Giovanni.

He launches a military attempt against the Narentines in Dalmatia, who have since 886 been hostile to Venetia.

As soon as he becomes Doge, he advances with a fleet of twelve galleys to the port of Makarska (Mokro), where he sinks five Narentine ships.

He lands near Mokro and advances deeper inland, but the Narentines crush his forces on September 18, 887, killing him in open battle.

He is the first Doge to die in a battle.

The Venetians begin paying prince Branimir of Croatia an annual tribute for the right to travel and trade in the Croatian part of the Adriatic.

The elderly and infirm Giovanni briefly rules Venice following the battle death of Pietro I Candianoi, until a successor can be found in Pietro Tribuno, his great-nephew.

His son, Pietro II Candiano, will also later become Doge.

The failure of Emperor Charles III to halt the Viking raids on the East Frankish kingdom results in his overthrow by the East Frankish magnates.

Arnulf takes the leading role in the deposition of his uncle.

With the support of the nobles, Arnulf holds a Diet at Tribur and deposes Charles in November 887, under threat of military action.

Charles peacefully goes into his involuntary retirement, but not without first chastising his nephew for his treachery and asking only for a few royal villas in Swabia, which Arnulf mercifully grants him, on which to live out his final months.

Arnulf, having distinguished himself in the war against the Slavs is elected by the nobles of the realm (only the eastern realm, though Charles had ruled the whole of the Frankish lands) and assumes his title of King of East Francia.

Varangian (Scandinavian) military leaders and merchants had during the 860s established outposts in Northern Russia at Novgorod and in Ukraine at Kiev.

Prince Oleg, kinsman of Rurik of Jutland, the semilegendary founder of the Rurik dynasty of Kievan Rus’, expands control of the territory along the Dnieper River, joining Novgorod via Smolensk with Kiev, which henceforth will serve as the political and cultural center of the Kievan Rus’.

(In the early chronicles the Varangians are also called Rus’, and this corporate name becomes as well a territorial designation for the Kievan region—the basic territory of the Rus’; later, by extension, it will be applied to the entire territory ruled by members of the Kievan dynasty.)

The disciples of Cyril and Methodius are credited with preparing more than three thousand priests.

With the active assistance and material support of Boris, they establish centers of Slavic learning at Pliska, …

…Preslav, and Ohrid in the West.

Dacia's Christians had adopted the Slavonic rite, subject to the Bulgarian metropolitan at Ohrid, soon after the conversion of the Bulgars to Christianity. (It will be maintained until the seventeenth century, when Romanian becomes the liturgical language).