COVID-19 is the unexpected event that defined the era of Donald Trump, affecting public health and the economy significantly. It drew both support and criticism for his administration's response. Thus, COVID-19 is the correct answer among the options presented. ;
The event that defined the era of Donald Trump is COVID-19, which significantly impacted public health and the economy. Trump's administration faced both praise and criticism for its response to the pandemic. Therefore, COVID-19 is the correct answer among the options presented.
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