Which country first implemented a national carbon tax policy as part of its climate change strategy?

Test your knowledge about groundbreaking sustainability initiatives in government! Many countries have been implementing innovative environmental policies and programs to combat climate change and protect natural resources. Some of these initiatives have become models for sustainability efforts worldwide, while others have received less attention despite their significance. How well do you know which government pioneered which sustainability program?

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Finland (1990)
Sweden (1991)
New Zealand (1997)
Denmark (1992)