East Java also decided to join Indonesia. East Java province borders the Java Sea in the north, the Strait of Bali in the east, the Indian Ocean in the south, as well as the Central Java province in the west. The length of the east-west stretch of about 400 km. The width of the stretch of the north-south in the west about 200 km, but in the eastern part of narrower by about 60 km. Madura is the largest island in East Java, separated from the mainland Java by the Strait of Madura. Bawean Island is located about 150 km north of
Battle of the Trench the Banu Qurayza tribe, leading to their surrender and enslavement or execution. The defeat caused the Meccans to lose their trade and much of their prestige. The battle is named after "trench", or "khandaq", that was dug by Muslims in preparation for the battle. The word "khandaq" () is the Arabised form of the Persian word "kandak" (meaning "that which has been dug"). Salman farsi the Persian advised Muhammad to dig a trench around the city. The battle is also referred to as the "Battle of Confederates" (). The Qur'an uses the term "confederates" () in sura "Al-Ahzab" to denote