One major way in which waves erode land is through the friction of the water on the land itself. Another major way is that the salt in the water erodes the land through chemical processes.
I’m pretty sure it’s called the tectonic plate theory
Most people live in Moscow.
The most densely populated cities and towns are around Moscow.
Southeastern coast
I am pretty sure this would be right as I have had a friend from Australia tell me this good luck.