Model number. Sometimes abbreviated as Model or Model No. , a Model number is a unique number given to each product made by computer and computer hardware manufacturers. Model numbers allow manufacturers to keep track of each hardware device and identify or replace the proper part when needed.
The Tigris and Euphrates, with their tributaries, form a major river system in Western Asia. From sources in the Taurus mountains of eastern Turkey they flow by/through Syria through Iraq into the Persian Gulf.he TigrisâEuphrates Basin is shared by Turkey, Syria, Iraq, Iran and Kuwait.
THE ANCIENT MIDDLE EAST: The Tigris and Euphrates River Valley. The Tigris and Euphrates Rivers. 1. ca. 4500 B.C.: Nomadic herders began to plant crops and build permanent settlements at the mouth of the Tigris and Euphrates Rivers. * Very little is known about these early settlers.