Which best describes the impact of railroad expansion on the steel industry?
a. it did not affect the demand for steel at all.
b. it decreased the demand for steel since railroad tracks were build from wood.
c. it increased the demand for steel since steel was used to make railcars and tracks.
d. it decreased the demand for steel since the railroad was generally not used to transport steel.

answer

the statement that best describes president carter’s attempt to free the hostages in iran is c. all of the attempts failed.

explanation

the operation eagle claw conducted by the united states armed forces was a failed mission which aimed to rescue 52 americans captured as hostages in the american embassy, tehran on 24/4/1980.the mission was authorized by president jimmy carter. the failures included;   obstacles in operation that included operational conditions challenges caused by sandstorms, hydraulic problems of one the helicopters and , mechanical failure of another helicopter that was identified as a cracked rotor blade and the crashing of another helicopter during mission abortion causing death of 8 service persons.

it would be a. that is the only one i could think of