Because they are not man made and are part of the earth's natural features caused by the the weathering and erosion of the earth.
The Open Door Policy is a name in foreign affairs preeminent
used to stand to the US policy set up in the late nineteenth century and the beginning
of twentieth century, as articulated in Secretary of State John Feed's Open Door
Note, dated September 6, 1899 and exchange to the significant European forces.
According to sources, the most probable answer to this query is that poor delivery service if not well executed can have various effects on the social, economic and environmental problems. Such as increasing the cost value and reducing efficiency (economic), reduce consumer (social) and increase waste (environmental) production.Thank you for your question. Please don't hesitate to ask in Brainly your queries.
because they're different ways
That would be the Himalayas and have the highest mountain range in the world.