Several reasons actually. The most important one was its location. Thanks to it it enabeled the trade with African, European and Asian countries. Another thing is that it also was a good place to start a war on other countries.
The correct answers are A. And D. Trade in Africa, Europe and Asia was booming and Greece was expanding its empire under the Alexander leadership. Alexandria in Egypt became the center of knowlege with the famous library that still stands today.
The answer is c...........