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The SDI is a city improvement in Civilization: Call to Power.

Effect[]

The SDI, the Strategic Defense Initiative, protects cities from nuclear attack within the city's radius. Using a combination of missiles and lasers, the SDI creates an umbrella of safety over the worried citizens of the nuclear age.

Great Library entry[]

During the 1980s, the American president Ronald Reagan instituted the Strategic Defense Initiative, a multi-billion dollar project whose mission was to protect the U.S. against intercontinental ballistic missiles. Fifty years later, developments in advanced computer tracking and high-energy lasers created a working interception system. Operational for the first time in the middle of the 21st century, SDI arrived just in time to protect the world from nuclear war.

See also[]

  • SDI in other games
Civilization: Call to Power Buildings
Academy Airport Aqua-Filter Aqueduct Arcologies Bank Beef Vat Bio Memory Chip Body Exchange Capitol Cathedral City Clock City Wall Coliseum Computer Center Courthouse Drug Store Eco-Transit Factory Forcefield Fusion Plant Granary Hospital House of Freezing Incubation Center Marketplace Micro Defense Mill Mind Controller Movie Palace Nanite Factory Nuclear Plant Oil Refinery Publishing House Rail Launcher Recycling Plant Robotic Plant SDI Security Monitor Television Temple Theater University
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