Book excerpt: Tracing the Constitution's separation of church and state to the need for French assistance in the fight against the British during the Revolutionary War, the author examines the significant break with the traditional, virulent anti- Catholicism of colonial New England Protestants. While some saw the break as a necessary result of shedding the colonial past, the author argues that many saw it as a temporary expedient to be dispensed with as soon as possible. The alliances with France and French Canadians, he says, had the effect of redrawing religious boundaries and disabusing some Americans of their habitual intolerance. Annotation copyrighted by Book News, Inc., Portland, OR