Complex sentence: Many of the draft constitutions had been sent to Napoleon for review, he made his own preferred version known and exerted influence in helping some of the coups that overthrew interim governments organized along constitutions that did not meet with his approval.
Split into simpler sentences: Many of the draft constitutions were sent to Napoleon for review, and he he made his preferred version known. He also assisted in some of the coups that overthrew interim governments organized along constitutional lines that did not meet with his approval.