Answer:
Gate control theory.
Explanation:
This question wants to test our knowledge on health Psychology that is to say the perception of pain for instance how high the scale of pain is whether it is Acute or chronic. 
Gate control theory explains how the body respond to pain by blocking it. Pain can be blocked through psychological factors or by using neurotransmitters such as endorphins. 
According to Gate control theory pain can be blocked by using ng medications such as Narcotics and Analgesics. 
 
        
             
        
        
        
I would say religious and racial discrimination. 
        
             
        
        
        
Answer:
The Freedmen’s Bureau, formally known as the Bureau of Refugees, Freedmen and Abandoned Lands, was established in 1865 by Congress to help millions of former black slaves and poor whites in the South in the aftermath of the Civil War. The Freedmen’s Bureau provided food, housing and medical aid, established schools and offered legal assistance. It also attempted to settle former slaves on land confiscated or abandoned during the war. However, the bureau was prevented from fully carrying out its programs due to a shortage of funds and personnel, along with the politics of race and Reconstruction.
Explanation:
brainliest plz?
 
        
             
        
        
        
Sometimes an unfavorable result can cause violence in sports events, like when fan or viewers watch their favorite team play, they become easily aroused when their team loses a match. When they want only their team to win, they pass some bad remarks on other team fans that both started a fight between the two.
Another one is referee decision. Watchers become frustrated when the referee or the umpire make the very wrong decision.SO, they pass some bad words to the referee that can start a grudge between the players on the field, then starts violence with the teams players.