He states that it was caused by rats,
He states that it caused reckless behavior
He state that it spread from the Middle East
He states that people did not avoid the sick
The correct answer is he states it spread from the Middle East
I hope that helped
The correct answer is "A".
The Domino Theory was developed in 1950 in the US administration. It proposed the idea that if one country in a region was governed by a left-wing power which shared communist beliefs, neighbor countries will follow suit. This led the United States to get involved in numerous armed conflicts around the world, such as the Korean War, in order to prevent the spread of Communism.