<span>Both are densely populated</span>
Solve for one of the variables first ,, then whatever answer you receive from x or y , you then begin to plug it in to get other variable.
I think Rome to Athens is incorrect. According to my research, Massilia to Carthage is the route that involves trade outside of the Byzantine Empire.The Byzantine Empire was also known as the Eastern Roman Empire. Its capital city was Constantinople. The routes Rome to Athens, Alexandra to Ravenna and Antioch to Ephesus all fall within the Byzantine Empire. The Byzantine Empire was the most powerful empire during its existence and survive the breaking up and fall of the Western Roman Empire.
The correct answer is - The region is dominated by desert and high elevations.
Most of the population of China is concentrated in the eastern half of the country, while the western half is very sparsely populated. The main reason for this is the geography and the climate of this part of China.
The western half of the country is dominated by high mountains, the highest in the world actually, the Himalayas, the Tibetan Plateau, deserts and semi arid ares. All of these places are not suitable for living, especially not for larger populations, so there's towns and villages that far away from one another, and they have relatively small populations.
Most hills are "B. Not steep", since for it to be a hill it needs to be somewhere in between the elevation of flat land and mountainous land, which of course is much higher and usually steeper.