Title: the nan song was the first dynasty to allocate a standing army at a port of trade for protection. what would be the reason for doing this?

to protect the citizenry from foreign traders who were known to be brutal and barbarous

to protect the borders of china from illegal entry of foreigners

to protect foreign traders from a citizenry who did not like any foreign influence on their country

to protect all concerned with the trade industry thus insuring its continuation

the berlin blockade was an international crisis that arose from an attempt by the soviet union, in 1948–49, to force the western allied powers (the united states, the united kingdom, and france) to abandon their post-world war ii jurisdictions in west berlin. in march 1948 the allied powers decided to unite their different occupation zones of germany into a single economic unit. in protest, the soviet representative withdrew from the allied control council. coincident with the introduction of a new deutsche mark in west berlin (as throughout west germany), which the soviets regarded as a violation of agreements with the allies, the soviet occupation forces in eastern germany began a blockade of all rail, road, and water communications between berlin and the west. on june 24 the soviets announced that the four-power administration of berlin had ceased and that the allies no longer had any rights there.

the answer is a, salt plain