Which one of the following sentences has both a compound subject and a compound object? a. amy and paul watched television before bed. b. john and his wife danced and sang. c. helen and her children are going to the zoo. d. jane and liza loves books and music.

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.