The Global Commercial Aircraft Industry Was Dominated by Two American

The global commercial aircraft industry was dominated by two American firms until the early 1990s because

A) tariffs and quotas kept European firms out of the American market.
B) of different sector advantages influenced by domestic interest groups.
C) of earlier government support of funding for research & development (R&D) and defense related purchases.
D) of late-mover advantages to utilize the most recent technological innovations.
E) failure of Japanese government to successfully utilize industrial policy in this sector unlike their success in the semi-conductor sector.