Which government initiative first required social media political ads to include clear 'Paid for by' disclosures with a searchable public database of all political advertisements?

Social media has transformed how political campaigns and government entities connect with citizens. From Barack Obama's groundbreaking use of social platforms in 2008 to today's sophisticated targeting techniques, political social media advertising has evolved dramatically. This poll tests your knowledge about a significant milestone in government social media advertising that changed how political campaigns leverage digital platforms.

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The Federal Election Commission's Digital Advertising Transparency Act of 2017
Facebook's Political Ad Library, launched after the 2016 election controversies
The Honest Ads Act proposed by Congress in 2018
The Presidential Campaign Digital Accountability Office established in 2015