Alexander's empire collapsed after his death because select one: a. he was murdered. b. he had been an ineffective administrator. c. he had murdered his closest allies. d. his generals seized parts of his empire for themselves. e. the upper classes of the empire challenged its unity.

d. his generals seized parts of his empire for themselves

Explanation:

Alexander had no legitimate heir. His half-brother Filipo Arrideo was deficient, his son Alejandro would be born after his death, and his other son Heracles, whose fatherhood is questioned, was of a concubine.70 Because of this the succession issue was of vital importance. All his relatives and heirs, both his mother Olympia, his wife Roxana, his son Alejandro, his lover Barsine and his son Heracles, were sent to kill by Cassandra, which led to the extinction of the Argéada dynasty.

The name of diádoco is given to the suitors of the inheritance of the empire that left Alexander the Great. Most historians believe that if Alejandro had intended to choose one of his generals he would obviously have chosen Crátero because he was the commander of the largest part of the army, the infantry, because he had proved to be an excellent strategist, and because It had the qualities of the ideal Macedonian. But Crater was not present, and the others may have chosen to hear Krat'eroi, "the strongest." Whatever his response, Crater did not seem to crave the charge. Then, the empire was divided between its successors (the diádocos).

Despite attempts to keep the Macedonian Empire unified, it would eventually be divided into several independent kingdoms that founded its dynasties.

Tolemaic dynasty: Ptolemy became ruler of Egypt from the outset and remained isolated and stable from the beginning.

Antigonida Dynasty: with center in Macedonia and with the son of Antígono Monoftalmos, Demetrio as king; this dynasty conquered his kingdom to Cassander and also occupied Greece.

Seléucida Dynasty: Based in Mesopotamia and Syria, Seleuco later dominated a wider territory, since he took over Asia, which was held by Antigono.

Lysimachus obtained Thrace and Asia Minor but failed to found his own dynasty or consolidate his domains.

b. ensure mutual protection from communism.

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i'm pretty sure it would be, the mediterranean sea.