A, we didn't want to join the war unless we had to, in this case we were attacked so we declared war on Japan the next day
So basically, pan-Arabism was an ideology closely to Arab nationalism, where Arab nations call for unity among Middle Eastern and North African countries. It's like, we share a common language, history, etc., so why not we be unified? And no, it was not successful. There are many conflicts within the Middle East today between Arab governments.
3 and 4 are definitely correct answers (untrained and little supplies). They had a purpose though so that is incorrect and the organization of the continental army was quite random at first (local militias) as america tried to stall the British forces until a national organized army rose up.
Answer:
Militarism is the aggressive strengthening of armed forces. Nations raced to build up their armed forces and formed military alliances.