sentence2: was in its day an unprecedented event never before had two halves of the world, which had not had the slightest contact with one another for millennia, come face to face, nor had human beings had to confront other mythologies, architecture, aesthetics, languages, memories...
sentence1: كان اللقاء بالأمريكيين يومها، حدثًا غير مسبوق لم يحدث من قبله أن التقى نصفي العالم ولم يحدث أدنى اتصال بينهما عبر آلاف السنين.