Answer:
After the death of Alexander the Great, the Greek empire declined because:
C. generals fought with each other.
Step-by-step explanation:
Born in 356 BCE, Alexander the Great was a Greek king famous for conquering most of the known world (of his day). He was also considered a military genius, known as well for his courage and diplomatic skills. However, once the great king died, his empire ended up declining. His death left a gap in power, so his generals began fighting one another to obtain it. The empire was, thus, divided among Alexander's generals instead of remaining united.