Why do you think so many social movements took place in the 1960's and not in the decades before or after?

The 1960's were a decade of revolution and change in politics, music and society around the world. ... The 1960's were an era of protest. In the civil rights movement blacks and whites protested against the unfair treatment of races. Towards the end of the decade more and more Americans protested against the war in Vietnam.

These movements include the civil rights movement, the student movement, the anti-Vietnam War movement, the women's movement, the gay rights movement, and the environmental movement. Each, to varying degrees, changed government policy and, perhaps more importantly, changed how almost every American lives today.

Explanation:

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when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.  

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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