A reader writes:
It should be noted that the "America that ended slavery" is Obama's America; it is the blue-state America that Shapiro accuses of being Europeanized. The descendants of those who fought to end slavery overwhelmingly voted for Obama. It is the old Confederacy, whose political culture is still marked by slavery's legacy, that contends that Obama doesn't represent "real America."
The irony is that Europe, namely the English, abolished slavery well before the US did: 1833 in England and 1865 in the US.
Timeline of other slavery milestones here.