Rome faced constant attack after the pax romana because its army

A. was becoming less loyal to the emperor.

Explanation:

This is the main reason why Rome faced constant attack after the Pax Romana. One of the most important qualities of the Roman Empire was its large, well-organized army. This allowed Rome to become extremely powerful and to conquer a very large territory. However, such strength can only exist as long as the army is disciplined and dedicated. If the army does not trust the emperor, then it is likely that their performance will be worse and that the empire will become easier to attack.

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.

a.) are both appointed for life