Answer:
We can be aliens on earth but we need people to discover are body but some of us may not be aliens.
Explanation:
I'm NOT 100% sure about this answer but I think it's the Lines of Longitude
Well it depends on multiple things like the climate, amount of precipitation and so on like in a desert its gonna be hard to have run off because the water will just soak into the ground through its cracks because it doesn't get sufficient water supply. hope this helps.
Europe's physical geography, environment and resources, and human geography can be considered separately. Europe's rich agricultural and industrial diversity has made the continent a centre of trade and commerce for centuries. It is centrally located between the two other “Old World” continents, Africa and Asia.
Europe did use to have lots of larger states and empires but most of them have broken up and are mostly arranged along ethnic lines. So there aren't many multi-ethnic states left in Europe anymore and a lot of these states were created due to wars.
