一道Kaplan语法题~困惑困惑~

Long-distance travel for humans primarily on relied on animal power until 1829, when the steam locomotive was invented by Richard Trevithick, who had found a way to provide sufficient traction for movement and led to the building of locomotive-driven passenger trains.

A. who had found a way to provide sufficient traction for movement and led to the building of locomotive-driven passenger trains
B. who found a way to provide sufficient traction for movement and led to the building of locomotive-driven passenger trains
C. who, after finding a way to provide sufficient traction for movement, led to the building of locomotive-driven passenger trains
D. whose discovery of a way to provide sufficient traction for movement led to the building of locomotive-driven passenger trains
E. who had led to the building of locomotive-driven passenger trains by providing sufficient traction for movement

答案是D。我选的是E。解释上说因为lead to the building of locomotive-driven passenger trains不是RT这个发出的动作。但是我个人理解的E的意思：RT通过provide sufficient traction for movement带来了blablabla，这样的理解不对么？
望NN的指教~