Banu Qurayza after his victory over the Meccans in the Battle of Badr, Banu Qaynuqa threatened Muhammad's political position and assaulted a Muslim woman which led to their expulsion from Medina for breaking the peace treaty of Constitution of Medina. The Qurayza remained passive during the whole Qaynuqa affair, apparently because the Qaynuqa were historically allied with the Khazraj, while the Qurayza were the allies of the Aws. Soon afterwards, Muhammad came into conflict with the Banu Nadir. He had one of the Banu Nadir's chiefs, the poet Ka'b ibn al-Ashraf, assassinated and after the Battle of Uhud accused the tribe of
Battle of the Hellespont from Byzantium. Constantine's army then defeated Licinius' at the Battle of Chrysopolis; this victory was the final battle in the conflict, Licinius surrendered himself following the battle. Constantine consequently became the sole master of the Roman Empire. Battle of the Hellespont The Battle of the Hellespont, consisting of two separate naval clashes, was fought in 324 between a Constantinian fleet, led by the eldest son of Constantine I, Crispus; and a larger fleet under Licinius' admiral, Abantus (or Amandus). Despite being outnumbered, Crispus won a very complete victory. Following his defeat at Adrianople, in Thrace, Licinius and his main army