In A People's History of the United States, why does Howard Zinn name Chapter Ten "The Other Civil War?"

"The Other Civil
War" is about the ongoing class war in the United States during the 1800s. This is the
other civil war, alongside the Civil War that was fought between the forces of slavery and those
of freedom. Zinn discusses several revolts of the oppressed working class against the ruling
class, including the Anti-Renter movement in the Hudson Valley against the patroon system and
the Dorr Rebellion in Rhode Island, which agitated for electoral reform so that more
working-class people could vote. In answering these questions, the Supreme Court decided it
would essentially be conservative. It deferred to the legislative and executive branch, and the
federal government defended business interests.

In this climate, revolts by
working-class people, including Lowell factory girls and other unions, continued. Though the
poor lived in squalor and working people toiled in unsafe conditions, the government remained a
staunch defender of the rich and of the business class. The government did...