Which of the following explains the approach of corporations to obtain and retain one or more of its$$ value$-$chain activities, thereby minimizing the difficulties of working with external$$ partners, and allowing for increased control over operations$$ abroad?

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Part $1$

A$.$

Factors proportions theory

B$.$

Internalization theory

C$.$

Monopolistic advantage theory

D$.$

New trade theory

E$.$

Absolute advantage principle