Answer: B
Explanation: (Took the test) You should always check to see if the information you get from someone comes from an expert before any further fact checking.
Answer:
Roughly 40 percent of Americans lived in cities, and the number was climbing. These large city populations caused crime rates to rise, and disease to spread rapidly. As a result of unsanitary living conditions, diseases such as cholera, dysentery, and typhoid fever struck urban areas with increasing frequency.
The house of wisdom<span> had a crucial role to play in linking the Islamic world fronts in east and west and in introducing the heritage in its perfect form to all Muslims in order to preserve it from loss and deterioration.</span>
