whole nation; entire nation; all the people
増税の負担は国民全体に及んだ。
The burden of the tax increase fell on the entire nation.
その政策は国民全体の生活に関わる問題だ。
That policy is a matter that affects the lives of all citizens.
国民全体が被害を受けた大規模な自然災害だった。
It was a major natural disaster that affected the entire population.