How did the Mongol Empire destroy states and increase the interconnection of Afroeurasia? answer

The Mongols introduced two deadly Chinese inventions—guns and gunpowder—to the West. The new weaponry sparked a revolution in European fighting tactics, and the many warring states of Europe all strove over the following centuries to improve their firearms technology. Also to facilitate trade, Genghis offered protection for merchants who began to come from east and west. ... For the 100 years of the height of the Empire, the East-West Mongol trade routes became the fabled Silk Road which for the first time linked Europe to Asia, allowing the free flow of ideas, technologies, and goods. In the short term, the Mongols constructed the larges Eurasian empire to date. In the process, they destroyed a series of well-established empires. They wreaked extensive destruction on settled populations. They encouraged trade and exchange across the Eurasian network.

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