The Greatest Achievements Of Alexander The Great

Alexander the Great is often remembered for his military accomplishments, and for good reason. As king of Macedonia, he conquered much of the known world, and did so without losing a battle. However, Alexander’s legacy goes beyond mere military might. His cultural impact meant that the Mediterranean became Greek-dominated for hundreds of years. He also founded many cities, some of which still exist today. Finally, he inadvertently paved the way for Christianity to become a dominant world religion. All this, along with his military successes, make up Alexander the Great’s most significant achievements.

He Conquered the Persian Empire

Before Alexander, Greece and Persia were major rivals for roughly two centuries. The Greco-Persian Wars from 499 to 449 BCE ended with the Greek city-states successfully resisting Persian invasions and preserving their independence. As the Greek city-states then began fighting each other in the Peloponessian War (431 to 404 BCE), Persia provided financial aid that proved instrumental in Sparta’s eventual victory over Athens. The next several decades then saw Persia exert significant influence over Greek politics by funding and manipulating competing city-states to ensure that the region remained divided.

This dynamic changed dramatically under Alexander the Great. His father, Phillip II, unified most of Greece under Macedonian rule and was planning an invasion of Persia before his assassination in 336 BCE. Alexander subsequently followed through with this plan, invading the Persian Empire in 334 BCE. Over the next several years, he conquered the core territories of the empire. The decisive engagement was the Battle of Gaugamela in 331 BCE, which resulted in the Persian king Darius III fleeing into Central Asia. Afterward, Alexander took the Persian capitals of Susa, Babylon, and Persepolis. With this, he effectively ended centuries of Greco-Persian rivalry and brought both civilizations under a single imperial system.

He Built One Of The Largest Empires in History

Alexander's conquest of Persia was instrumental in another of his main achievements: building one of the largest empires in ancient history. At its peak, it covered roughly two million square miles (about 5.2 million square kilometres). Alexander began building it in 336 BCE when he secured his position by suppressing revolts in the Balkans and Greece. He moved onto Persia in 334 BCE, beginning by working his way down through Anatolia, the Levant, Palestine, and Egypt, and ultimately defeating the Persians in the aforementioned Battle of Gaugamela in 331 BCE. Alexander then pushed east into Central Asia, where resistance and consolidation campaigns occupied several years, before turning his attention to India. Despite winning the Battle of the Hydaspes in 326 BCE, his exhausted army refused to advance farther into the Indian subcontinent, forcing him to turn back. Nonetheless, what he had already achieved was remarkable. In just over a decade, Alexander created an empire that stretched from southeastern Europe to South Asia.

He Spread Greek Culture Around the World

Alexander the Great was responsible for helping spread Greek culture across much of the ancient world. First, the spread of Koine Greek, a common form of Greek that developed from earlier dialects, became the dominant language of administration and commerce across much of the Hellenistic world. He also founded many cities that became major cultural and economic hubs. Finally, encouraged the blending of Greek culture with the culture of the regions he conquered, particularly in Persia. Alexander adopted elements of Persian court culture, incorporated traditional Persian royal rituals, and married Persian women. Such practices encouraged locals to adopt aspects of Greek culture themselves, since they felt like their own traditions were being respected. Such practices helped encourage cooperation between Macedonian and local elites, since many subjects felt aspects of their own traditions were being acknowledged and preserved. All these factors contributed to the Hellenistic Period, an era of strong Greek cultural influence across the Mediterranean and Near East that lasted from Alexander’s death in 323 BCE until Rome conquered Ptolemaic Egypt in 30 BCE.

He Founded Many Cities

Alexander was not just a conqueror. He was also a builder. This was most clearly seen in the many cities established or reorganized during his campaigns, the most famous of which was Alexandria in Egypt. After he died, it became the capital of the Ptolemaic dynasty, and the cultural, economic, and one of the leading cultural, economic, and political centers of the Greek world. One reason for its importance was the famed Library of Alexandria. More than a simple library, the institution functioned as a major scholarly and research center that attracted intellectuals from across the Mediterranean.

Even once Ptolemaic Egypt was conquered by Rome in 30 BCE, Alexandria remained highly important. Its position on the Mediterranean and its connection to the Nile meant that it continued to be a crucial economic hub. Alexandria again came under new governance when it was conquered by the Rashidun Caliphate in 641 CE. Although Cairo eventually eclipsed it as Egypt’s primary political center after the founding of Fustat and later Cairo, Alexandria remained an important port city and center of trade. Its geographic position, institutions, and long history ensured that its significance endured for centuries.

He Paved The Way For Christianity

Alexander’s final greatest achievement was indirect rather than intentional. By helping create a more interconnected Hellenistic world with shared languages, trade networks, and cultural exchange, he contributed to conditions that later aided the spread of Christianity centuries after his death. The New Testament was originally written primarily in Koine Greek, meaning people from Albania to Afghanistan could read and understand it. This allowed Christian texts and ideas to circulate widely across diverse regions.

Alexander and his successors also helped expand and maintain networks of roads, trade routes, and cities that improved communication and movement across their territories. Early Christian missionaries, including Paul the Apostle, later benefited from these interconnected urban and commercial networks as they traveled throughout the eastern Mediterranean. They often found receptive audiences in large cosmopolitan cities such as Alexandria, where populations were culturally diverse and intellectually active.

So, while Alexander the Great did not directly cause the rise of Christianity, the Hellenistic world created through his conquests helped provide many of the linguistic, cultural, and infrastructural conditions that enabled Christianity to spread widely in the centuries that followed.