<span>Japan is isolated by the sea</span>
Affects it because they are joining together
The attack on pearl harbor was intended as a prevention order to keep the U.S pacific fleet from interfering with military actions the empire of japan was planning on south east Asia against overseas territory of the united kingdom, the Netherlands, and the United states. <span />
I assume the answer is true. There would have to be more trade, it comes with industrialization. Sorry I couldn't help more!