“使成为同一时代”可以翻译为 “bring into the same era/age” 或者 “make (them) belong to the same era/age” 。
例句：
These historical events, though occurring in different regions, can be brought into the same era for comparative study.（这些历史事件虽然发生在不同地区，但可以将其置于同一时代进行对比研究 。）
The archaeological findings suggest that these two cultures might have been made to belong to the same age through certain interactions.（考古发现表明，这两种文化可能通过某些互动而处于同一时代 。）