問題詳情
4 During the Covid-19 pandemic, countries around the world immediately closed their borders, imposedexport bans on vaccines and pharmaceutical equipment, and the U.S. and China competed on vaccinediplomacy. Which of the following best explains the phenomena above?
(A) Realism.
(B) Liberalism.
(C) Globalism.
(D) Protectionism.
參考答案