What is historical development of critical infrastructure?

The first formal federal definition of “critical infrastructure” was developed in 1996 when President Clinton signed Executive Order 13010. EO 13010 established a national commission on critical infrastructure.Critical infrastructure includes the vast network of highways, connecting bridges and tunnels, railways, utilities and buildings necessary to maintain normalcy in daily life. Transportation, commerce, clean water and electricity all rely on these vital systems

b is correct

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