Why did the Silk Road become less useful after about 1500?

The Silk Road experienced a significant decline in utility after approximately 1500 due to a combination of geopolitical instability and the emergence of more efficient maritime alternatives.

Key factors contributing to this shift include:

• Continental Warfare: In the region of the Tien Shan, ongoing continental warfare severely limited the safety and practicality of traditional overland routes.1
• Political Fragmentation: The breakup of the Mongol Empire in the late 14th century ended the period of relative security that had previously facilitated transcontinental travel, making it difficult for merchants to secure safe passage.2
• Rise of New Trade Routes: The establishment of maritime routes around southern Africa by European powers provided a more reliable and cost-effective way to transport goods between Europe and Asia, bypassing the land-based routes through the Middle East.3
• Control of Traditional Hubs: The Ottoman Empire and Venetians exerted control over the Mediterranean and ancient trade gateways, further complicating access for Western merchants and incentivizing the search for overseas alternatives.2