Religious and ethnical problems.
It was one of the largest empires of the world with many different ethnicities. The problem was to unite people under one rule.
Another problem was communication. It was hard to transfer knowledge and news to all parts of the empire because it was too large.
The Atlantic Ocean lies between North America South America Europe and Africa
If you joined Santa last Christmas at the north pole (90 degrees latitude), you would have seen Polaris straight overhead and the celestial equator on your horizon. The point straight overhead on the celestial sphere for any observer is called the zenith and is always 90 degrees from the horizon.
So the answer is the North Pole.
Well,not exactly. Longitude is the <em>angle</em> east or west of the Prime Meridian.
Volcanoes on Mars resemble Hawaiian Shield Volcanoes found on Earth, meaning that the answer is D.
