There are three branches of government in order to prevent any one sector obtaining complete control. The judicial branch is the Supreme Court, the executive branch is the president and his cabinet, and the legislative branch is Congress and the House of Representatives. Ideally, all three branches work together to make appropriate laws and enforce them. In an overly simplified explanation, the executive branch can propose or enact laws, the legislative branch is to make sure they are fair and necessary, and the judicial branch decides if they are constitutional. This system of checks and balances are to make sure erroneous laws are not passed, and one single person or group cannot seize control of the government. It was set up in this manner because the Founding Fathers wanted to prevent a tyrant or dictator from taking complete control of the country and reverting it back to imperial rule.
d) If the country was inhabited, Britain could take over the country by invasion and conquest; in other words, defeat that country in war. However, even after winning a war, Britain would have to respect the rights of indigenous people.