Which government's 'Data.gov' platform, launched in 2009, pioneered the open government data movement and influenced similar initiatives in over 70 countries worldwide?

In today's data-driven world, governments are increasingly relying on sophisticated analytics to inform policy decisions, improve public services, and enhance citizen engagement. This trivia question focuses on a landmark government data analytics initiative that fundamentally changed how a major nation approaches policy development. Test your knowledge about the intersection of big data and governance in this challenging question about public sector analytics innovation.

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United States (Obama administration)
United Kingdom (Cameron administration)
Estonia (Ansip administration)
Singapore (Lee Hsien Loong administration)