Question 21: A. It became the focus of large-scale commercial investment and industrial production B. It took several decades for industrial...

Question 21: 

A. It became the focus of large-scale commercial investment and industrial production

B. It took several decades for industrial change to affect production practices meaningfully.

C. It was originally assumed that attention was directed toward its cultural symbolism.

D. It became evident that commercial interest existed without full-scale industrial production.