Effect of Alexander invasion

• By opening up both the land and sea routine between India and  Europe, it brought both of them closer to each other.
• Indirectly this invasion made possible the establishment of Indo-Bacterian and Indo-parthian states,which at a later stages considerably influenced Indian architecture,astronomy,coinage etc.
• The invasion opened eyes of Indian politicians to the necessity of creating a unified empire.
• The date of the Invasion of Alexander is the 'first reliable date in early India history, and considerably helps us in solving chronological difficulties.