This dimension groups energy pioneers by nationality. Wikipedia defines nationality as "the legal status of belonging to a particular nation." Browsing this way collects every pioneer from the same country.
Facts
Comparison
Era of Emergence United States
Sources
1. Energy conservation - Wikipedia
WikipediaUnited States, 1970s oil embargoes and conservation policyQuote, United States, 1970s oil embargoes and conservation policy
Since the oil embargoes and price spikes of the 1970s, energy efficiency and conservation have been fundamental tenets of U.S. energy policy.
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