<span>The correct answer is The Constitution anticipated there would be many cases and issues that courts would need to decide. The United States of America is huge, and it's impossible to do anything without them. There are so many cases that not having inferior courts would mean that the higher ones would be overbooked and there would never be enough time for everything.</span>
Slate is much more commonly found in wet areas, especially around rivers in the United States, so it wouldn't be very available to Natives who were more inland.
