Which historical development is most closely associated with this poster

the Cultural Revolution

Explanation:

Cultural Revolution was the movement that urged on preserving communism and the Communist party in China with the leader Mao Zedong on the top. It wanted to change the capitalistic and traditional elements of Chinese ideas and life into the ones that are always connected with Mao’s character and thought. This was titled Maoism.  

The propaganda posters of the kind depicted above were common during the period. They were glorifying Mao and his influence on the people, soldiers, and culture of the country. While we cannot understand the text if we do not know Chinese, it is evident the poster is putting the image of Mao in line with the rising sun, trying to highlight his importance as the force that gives life to China and its people.

the answer is a glaciers carved a large valley that later flooded and became puget sound

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.