Need your help, please

What changes did japanese militarists make when they came to power?

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons

What event ultimately started world war 2 and ended britain and frances attempt to prevent war?