I am pretty sure this is correct.
Arab merchants brought news of their religion as they traded in different areas. There was a cultural exchange and due to international trade, Islam spread to other parts of the world.
Explanation:
The kelvin, symbol K, is the SI unit of thermodynamic temperature.
With no democratic experience and severe economic problems many Europeans saw dictatorship as the only way to prevent instability.
I believe the answer is A. because I couldn't find anything ardent abolitionist and his name is the same search