Here's a answer for you!
1. Intercontinental
2. The growth of powerful empires in Europe and Asia
3. A,C,B
4. Applying to something in the past
5. The Great Wall of China
6. On the bank of a river or near an oasis
7. A runner passing a baton in a relay race
8. Stabilizing
9. a network of empires
10. disease
K12?