The phrase "separate but equal" describes the legal philosophy that justified institutional racial segregation in the late 19th century and early 20th century.
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Answer:
The dangers of the construction of hydroelectric dams upstream of the Mekong River adversely effect on the ecosystems and livelihoods of people in the Mekong Delta, Viet Nam
Explanation:
The answer is 2. 4. 1. 3. 5. in that order