I believe it is C. Memorials to powerful former leaders
They are known to mark the end of islamic golden age. Therefor you answer is they brought the islamic empire down.
The main way in which Chinese culture changed during the Warring States period was that it became far more unified as a result of these conflicts, since they led to the first real Chinese Empire.
Answer:
researching
Explanation:
Research the topic that you're going to write about, then do more research on the negative side about it and now you have the argument. And also give your own suggestions, for example: the car breaks were not working properly (now write your argument) : you should repair it what if you get in trouble because of it. So this is how you can make argumentative essay.