The most important element in speeding industrialization was the breakthrough which came when ______ succeeded in smelting iron with coke instead of charcoal in 1709.

The most important element in speeding industrialization was the breakthrough which came when ______ succeeded in smelting iron with coke instead of charcoal in 1709.

A.Thomas Newcomen

B.Abraham Darby

C.John Kay

D.Richard Arkwright

正确答案是B