Final answer:
The Arab-Islamic civilization as a globalizing agent is a theme of the post-classical period in history.
Step-by-step explanation:
The theme of the post-classical period in history is the Arab-Islamic civilization as a globalizing agent. During this time, the Arab-Islamic civilization made significant advancements in various fields such as science, mathematics, medicine, and literature. They also played a key role in the spread of knowledge and trade across different regions through the establishment of trade routes like the Silk Road.
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