Answer:
The Mongol Empire was noted for its sheer military power, a rapid communication system based on relay stations, paper currency, diplomatic immunity and safe travel under Pax Mongolica. These features facilitated the growth, strength and flexibility of the Empire in responding to ever-changing circumstances.
Explanation:
For the answer to the question above, e<span>ven though the majority of birds after 1977 had deeper beaks, there was still variation in beak size in the population. As seed type and seed availability changed, birds with beaks suited to exploit abundant seeds had higher reproductive success.</span>
Sry but I hope u get the right answer :O