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the brooklyn bridge is significant because it was the first suspension bridge built in the united states. in the world. with steel cables. with cast-iron cables.

The Brooklyn Bridge is significant because it was the first suspension bridge built with steel cables.

Option C

Explanation:

The idea of using steel cables galvanized with a coating of zinc was first proposed by John Roebling, the architect who designed the Brooklyn Bridge. The technique of constructing suspension bridges is believed to have developed in China. The suspension bridges constructed before the Brooklyn Bridge made use of steel chains, not steel cables. One such bridge was the 'Jacob's Creek Bridge' located in Pennsylvania.

answer; i believe its a

i think you may have asked this twice, but i answered one of the