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20th Century’s Greatest Engineering Achievements2

High Performance Materials

Nuclear Technologies

Laser and Fiber Optics

Petroleum and Petrochemical  Technologies

Health Technologies

Household Appliances

Imaging Technologies

Internet

Space Exploration

Interstate Highways

Air Conditioning and Refrigeration

Telephone

Computers

Agricultural Mechanization

Radio and Television

Electronics

Safe and Abundant Water

Airplane

Automobile

Electrification

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