The wars of revolutionary france against austria, spain, prussia, england, and russia were interesting because
a. the hated royal practice of capital punishment was banned.
b. they created a new calendar with new months and 10 day weeks and declared that the year of the revolution would be numbered as the year 1.
c. they instituted a "cult of the supreme being" as a state religion instead of the catholic church.
d. priests were required to swear loyalty to the french state, not to the pope.