several
a national highway system
The National Defense Highway System is usually called the Interstate Highway System or the Eisenhower Highway System.
Late 1950s under president Eisenhower. The full name of the system is "The National Defense and Interstate Highway System".
A national highway system
A national highway system
A national highway system
Dwight Eisenhower
Type your answer here... a national highway system.
A national highway system
As of 2006, there were 46,876 miles of roadway in the Dwight D. Eisenhower National System of Interstate and Defense Highways.
President Obama designated several national parks during his presidency, including Bears Ears National Monument in Utah and Katahdin Woods and Waters National Monument in Maine.
National highway system