In 1947 these two wartime pipelines were converted to gas pipelines.

In 1947 these two wartime pipelines were converted to gas pipelines.

• A. Big Inch and Little Inch
• B. Trans-Arabian and Keystone
• C. North Line and South Line
• D. Red Line and Blue Line

Answer: (A)

The key idea is how wartime energy infrastructure was repurposed after the war to meet growing natural gas demand. The two wartime pipelines that were converted in 1947 to carry natural gas are the Big Inch and the Little Big Inch. Built during World War II to move crude oil from Texas to the Northeast, they were repurposed to gas transport after the conflict, helping to rapidly expand the natural gas transmission network to urban centers. The other options refer to pipelines that weren’t the wartime oil lines repurposed in 1947, so they don’t fit this historical conversion.

The key idea is how wartime energy infrastructure was repurposed after the war to meet growing natural gas demand. The two wartime pipelines that were converted in 1947 to carry natural gas are the Big Inch and the Little Big Inch. Built during World War II to move crude oil from Texas to the Northeast, they were repurposed to gas transport after the conflict, helping to rapidly expand the natural gas transmission network to urban centers. The other options refer to pipelines that weren’t the wartime oil lines repurposed in 1947, so they don’t fit this historical conversion.