- - Ken Burns documentary subject
- - Ken Burns' subject
- - polite conflict between neighbours
- - polite conflict? hardly!
- - Very serious internal trouble?
- - Nation's internal conflict
- - Armed conflict within one nation
- - Lay bare revolutionary power struggle
- - 1860s North-South conflict
- - Historic event in which well-mannered turned rough
- - Serious internal trouble?
- - Conflict that led to Cromwell's Protectorate
- - Crude and angry mostly, Charlie promoted domestic dispute
- - Syria's began in March 2011
- - 1860s conflict
- - With 63-Across, theme of this puzzle
- - Polite contest
- - Union action
- - See 1-Down
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