The Uruk period (ca. 4000 to 3100 BC) existed from the protohistoric Chalcolithic to Early Bronze Age period in the history of Mesopotamia, following the Ubaid period and succeeded by the Jemdet Nasr period. Named after the Sumerian city of Uruk, this period saw the emergence of urban life in Mesopotamia. It was followed by the Sumerian civilization. The late Uruk period (34th to 32nd centuries) saw the gradual emergence of the cuneiform script and corresponds to the Early Bronze Age.

These early city-states had strong signs of government organization (though social stratification was not strongly evident until very late in this period and the beginning of the Early Dynastic Period, beginning around 3100 BC), evident even in items such as cheap, mass-produced beveled rim bowls which were made to be discarded. These bowls may have been handed out at community outings, such as large-scale constructions. The cities grew to cover up to 250 acres (1 km²) and up to 10,000–20,000 people by the end of the period.

Coordinates: 31°19′20″N 45°38′10″E / 31.32222°N 45.63611°E / 31.32222; 45.63611 Uruk (Cuneiform: 𒌷𒀔,^URU UNUG; Sumerian: Unug; Akkadian: Uruk; Aramaic: Erech; Hebrew: Erech; Greek: Ὀρχόη Orchoē, Ὠρύγεια Ōrugeia; Arabic: وركاء‎, Warkā') was an ancient city of Sumer and later Babylonia, situated east of the present bed of the Euphrates river, on the ancient dry former channel of the Euphrates River, some 30 km east of modern As-Samawah, Al-Muthannā, Iraq.

Uruk gave its name to the Uruk period, the protohistoric Chalcolithic to Early Bronze Age period in the history of Mesopotamia spanning c. 4000 to 3100 BC, succeeded by the Jemdet Nasr period of Sumer proper. Uruk played a leading role in the early urbanization of Sumer in the mid 4th millennium BC. At its height c 2900 BC, Uruk probably had 50,000–80,000 residents living in 6 km² of walled area; making it the largest city in the world at the time. The semi-mythical king Gilgamesh, according to the chronology presented in the Sumerian king list, ruled Uruk in the 27th century BC. The city lost its prime importance around 2000 BC, in the context of the struggle of Babylonia with Elam, but it remained inhabited throughout the Seleucid and Parthian periods until it was finally abandoned shortly before or after the Islamic conquest.

The Walls are an Irish rock band. They were formed in 1998 by two ex-members of The Stunning.

Brothers Steve and Joe Wall (previously of The Stunning) returned to Ireland after a two-year failed label stint in London. Their Camden housemate Carl Harms joined the band on guitar and keyboard duties. Drummer Rory Doyle joined soon afterwards. They set up their own label, Earshot Records (later changing it to Dirtbird Records) and recorded and released a string of singles. A remix of one of the album tracks, "Bone Deep", clicked with radio and became a nationwide hit. Many of the songs have featured on a number of TV series and feature films such as Bachelors Walk, Dead Bodies, Goldfish Memory and On the Edge (starring Cillian Murphy).

The Walls heard rumour of a second Slane Castle date for U2 (as the first concert had sold out in hours). They sent four copies of their album to the band. Bono loved it and offered The Walls a support slot. That day the band played to their biggest crowd to date – around 80,000 people. "To the Bright and Shining Sun" was their next single. That June they supported Red Hot Chili Peppers. They spent the next year gigging while building their own studio in Dublin.