 Turn to page 95 of your textbook  Take out your vocabulary sheets and describe the words 1. Tributary 2. Plateau 3. Alluvial plain 4. Silt

 Developed in the valleys of four major river systems 1. Tigris and Euphrates Rivers 2. Nile River 3. Indus River 4. Huang He

 Civilization called Sumer developed in the fertile crescent.  Tigris and Euphrates Rivers have many tributaries. Both rivers lead to the Persian Gulf.  Area called Mesopotamia, which means “the land between the rivers.”

 Northern Mesopotamia sat on the high, flat land of a plateau.

 Southern Mesopotamia lay on the low, flat land of an alluvial plain.

 In the spring, the Tigris and Euphrates Rivers often overflowed. As the floodwaters drained, they deposited soil and tiny rocks on the land to form a new layer of silt.

 Turn to page 23 of your Homework and Practice Book.  Use the maps from your textbook to fill in the map.