Arab scholars helped preserve much of the learning of the ancient world.
Today we will be talking about the ancient times in history.
The use of Arabic language
Since we are using Arabic, we are learning more 
Arab doctors were the first to discover that blood circulates
We finally found a new discovery
Between the 770s and the 1300s, Arab scholars helped preserve much of the learning of the ancient world. If the scholars wouldn't have kept teaching the learnings of the ancient world, then it would have been lost and nobody would have known about it.
The use of Arabic as a common language helped unite scholars and promote the sharing of knowledge. The Quran being written in Arabic contributed to this. The more the people used Arabic as their language the more they learned about their culture.
Since Arab doctors discovered that blood circulates, they we able to diagnose certain diseases. The Persian doctor ar-Razi discovered difference between measles and small pox.