Final answer:
The development of trade and trade routes influenced the rise and fall of dynasties in India during the middle ages through economic prosperity and cultural diffusion.
Step-by-step explanation:
The development of trade and trade routes had a significant impact on the rise and fall of dynasties in India during the middle ages. Trade routes facilitated the exchange of goods and ideas, leading to economic prosperity and cultural diffusion. The Silk Roads, for example, connected India with China and the Middle East, allowing the spread of Buddhism and the influence of Islamic culture. Control of these trade routes provided wealth and power to dynasties. However, disruptions in trade, such as invasions or shifts in trade routes, could weaken or even lead to the downfall of dynasties.