Toward the end of the Tang Dynasty, the government faced an invasion of armies from the north.
a series of rebellions in the outer areas.
a widespread plague that killed thousands.
a battle among members of the royal family.

the right choice would be a. culture within the city-state. c. loyalty to the police. d separation by land and sea.

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation:

i think it's b