Based on the maps, how did the Tang Empire most change between 617 and 700

1: how did the rise of rulers with total power in europe and asia lead to world war 2?

7. how did the early egyptians use the flooding of the nile river to their advantage? they diverted the water to flood their enemy's lands and destroy their crops. they created an easier way to travel to the mediterranean sea and the indian ocean. they established a new water-based athletic event for the ancient olympics in greece. they devised an innovative irrigation system, which created a surplus of food.

Explain how zollverein, a tariff agreement, to unite the german states.