Answer:
He did it to show the American power. He also canceled the trading between Japan and them (stop giving them the neccissary oil that Japan needed for the military). Japan resolved the problem through diplomacy while at the same time, planning attacks, especially on Pearl Harbor. The leader of Japan thought that having a surprise attack on the United States would give time for Japan to consolidate.
The Columbian Exchange greatly affected almost every society on earth, bringing destructive diseases that depopulated many cultures, and also circulating a wide variety of new crops and livestock that, in the long term, increased rather than diminished the world human population.
According to the account in the book of Exodus, Moses did.
Social contract theory, nearly as old as philosophy itself, is the view that persons' moral and/or political obligations are dependent upon a contract<span> or agreement among them to form the society in which they live.
</span>The theory<span> of an implicit </span>social contract<span>holds that by remaining in the territory controlled by some society, which usually has a government, people give consent to join that society and be governed by its government, if any. This consent is what gives legitimacy to such government.</span>