The 1960s saw the birth of the modern movement as a reaction to widespread pollution.

Environmental

Explanation:

According to my research on movements during the 1960's, I can say that based on the information provided within the question the movement being defined is called the modern Environmental Movement. This movement took place during the 60's and 70's in the United States and was made in order to address a couple big environmental issues.

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b. second continental congress

b. they tried to evict the squatters from the area.

so sorry if wrong