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On July 21, 1970, engineers completed the Aswan Dam in southern Egypt. The Aswan Dam was an enormous project, lasting more than 10 years and costing more than a billion dollars. 
 
The Aswan Dam controls the flow of the Nile River. The dam protects people living near the banks of the Nile from both floods and drought. The constant, regulated flow of water helps farmers irrigate their crops all year. The structure is also a hydroelectric dam, providing electricity used in homes, schools, businesses, and hospitals throughout Egypt. 
 
The Aswan Dam created a huge reservoir, called Lake Nasser. Lake Nasser and expansion of the Nile behind the dam displaced more than 50,000 people in Egypt and Sudan. The dam also drowned priceless archaeological sites. The Egyptian government famously relocated features from one of these sites—colossal monuments of Pharaoh Ramses II—to a nearby hill before the site was flooded.
Noun

the art and science of cultivating land for growing crops (farming) or raising livestock (ranching).

archaeological site
Noun

place where evidence of the past is being studied by scientists.

archaeologist
Noun

person who studies artifacts and lifestyles of ancient cultures.

bank
Noun

a slope of land adjoining a body of water, or a large elevated area of the sea floor.

colossal
Adjective

gigantic or huge.

constant
Adjective

unchanging or continuous.

Noun

agricultural produce.

dam
Noun

structure built across a river or other waterway to control the flow of water.

detail
Noun

small part of a larger organism, activity, or product.

displace
Verb

to remove or force to evacuate.

Noun

period of greatly reduced precipitation.

electricity
Noun

set of physical phenomena associated with the presence and flow of electric charge.

engineer
Noun

person who plans the building of things, such as structures (construction engineer) or substances (chemical engineer).

enormous
Adjective

very large.

expansion
Noun

process of enlarging.

feature
Noun

non-portable archaeological remains, such as pyramids or post-holes.

Noun

overflow of a body of water onto land.

government
Noun

system or order of a nation, state, or other political unit.

hydroelectric dam
Noun

structure built across a river or other waterway that generates electricity by controlling the flow of water that passes through it.

hygiene
Noun

science and methods of keeping clean and healthy.

industry
Noun

activity that produces goods and services.

irrigate
Verb

to water.

monument
Noun

large structure representing an event, idea, or person.

regulate
Verb

to determine and administer a set of rules for an activity.

relocate
Verb

to move a residence or business from one place to another.

Noun

natural or man-made lake.

temple
Noun

building used for worship.

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