After their attack on Pearl Harbor, what did Japanese leaders do next?

The Japanese tried to gain as much territory as possible. That was the whole point of Pearl Harbor: the U.S. stood in their way of total Pacific conquest. They launched attacks against the Phillippines, Singapore, Malaya, and Hong Kong all in the same day.

could you use this to with a topic?

the key difference between a democracy and a republic lies in the limits placed on government by the law, which has implications for minority rights. both forms of government tend to use a representational system — i.e., citizens vote to elect politicians to represent their interests and form the government.