Answer:
B. Referendum this is the correct answer
I'd say C because the other three wouldn't lead to it being the leading occupation, if anything, it would make it harder to conditions other than C
Answer:
Intelligence indicated Syria and Iraq were stockpiling weapons of mass destruction.
Explanation:
Initially the invasion was justified by U.S. intelligence indicating Syria and Iraq were stockpiling WMDs (debated) and they wanted to restore the countries to a Democracy. The more likely reasons were to take control of Iraqi oil and topple their government.