Which statement best explains why the period from the end of reconstruction to the early 20th century was referred to as the nadir of american race relations?
state governments actively resisted the efforts of the federal government to promote an integrated society.
both african americans and whites moved to segregated communities to avoid intermingling with members of the other race.
racism was deeply felt throughout the nation, and the civil rights gains of the reconstruction period were rolled back by jim crow laws.
racially motivated violence tore apart communities around the nation and resulted in inner-city riots that devastated african american neighborhoods.

mark other guy brainliest

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.