The correct answer to this open question is the following.
You forgot to include image number 2. However, doing some research we can say the following.
The image illustrates the spread of scientific knowledge in the period before 1450 in that it shows the Muslim presence in different bedrooms where sick lies on the bed. The image illustrates that Arab people that practiced Islam also had medical knowledge resulted from the many exchanges with other cultures and nations. Scientific research in the Arab world was more advanced and quickly spread all over other regions in the Middle East, North Africa, and some eastern European regions.
