Final answer:
The factors that contributed to Japan's series of rapid military victories following Pearl Harbor include a coordinated Pacific offensive, the surprise attack on Pearl Harbor, and the unpreparedness of the American military.
Step-by-step explanation:
The rapid military victories Japan achieved following the attack on Pearl Harbor can be attributed to several factors.
Firstly, Japan planned a coordinated Pacific offensive to neutralize the United States and other European powers, allowing them time to complete their conquests and fortify their positions.
Secondly, the surprise air attack on Pearl Harbor was designed to cripple American naval power for years, which would give Japan the advantage.
Finally, the American military and navy were caught off guard and unprepared for such an attack, allowing the Japanese to achieve swift victories in Southeast Asia.