What's the English for "Аспекти міжнародних відносин вивчалися давньогрецьким істориком Фукідідом."?

Question

Accepted Answer

Aspects of international relations have been studied by the ancient historian Thucidides.

Answer

Aspects of international relations have studied by the ancient historian Thucidides.

Answer

Aspects of international relations has been studied by the ancient historian Thucidides.

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