Which event caused some to say America was in a "post-racial" era?
O A. The election of Barack Obama
OB. The Civil Rights movement
O C. Hurricane Katrina
D. The Emancipation Proclamation

A. The election of Barack Obama

Explanation:

Post racial era refers to the United States being free from racial discrimination, segregation and preference.

Barack Obama was elected President of the United State in 2008 and was regarded as the first black president of the county. This made people to conclude that the United States has truly reached its post racial era.

several states had passed similar laws, but they were limited to intrastate businesses. the sherman antitrust act was based on the constitutional power of congress to regulate interstate commerce.

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on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.