Answer:
The purpose of NEPA was to declare national policy, promote efforts, to understand the ecological systems better, and to Establish a Council on Environmental Quality.
Would it be Jim Crow Laws? The Court found nothing unconstitutional about what happened and nothing was truly done about the Segregation until Brown vs. Board of Education 1752-1754.

The Silk Road was important because it helped to generate trade and commerce between a number of different kingdoms and empires. This helped for ideas, culture, inventions, and unique products to spread across much of the settled world.
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William Howard Taft is considered a "Trustbuster" because he administered over 70 antitrust suits against companies. He used the rule of law to solve many societal problems.