Answer:
D
Explanation:
Idrk know how to explain this but um basically deposition of valley walls will create a river-like path which over the years creates a river I think. I just used process of elimination tbh... Hurricanes don't make rivers so B definetley isn't the correct answer. A collapsed volcanic caldera has legit nothing to do with rivers so thats a no for C. and that leaves A and D and if you poor like 100 whole jugs of water into soil its not going to create a river which leaves B as the only answer that makes sense. (I hope this somewhat helps, if need be I can try to elaborate more in the comments)
Two push factors are:
Unrest in a country, war is always on.
Another reason is that unemployment is very high so they can't find work.
Answer:
2cm squared times 1cm is 2millimetres
It is called London London.
