Answer: A and C
Explanation:
The best answer is, by sending troops to protect their interests.
Western rulers were skeptical of forming alliances with their Muslim counterparts, and as a result, sought protection of themselves and their assets from within their own resources and by means of trained military personnel. This influx of western military forces caused tension among the Muslim regions and various leaders but was successful in securing the interests of the Western leaders.
Greek scientists – mostly mathematicians, philosofers, biologist, physicists –changed the way people viewed and understood the natural world around them starting from the simple observation and measurement of the objetcts around them. After that, their observations arrived to experimentation and analysis.
Answer:
A lot of things had changed