A. Silt is no longer carried down river.
It supports current flowing because when the water in the ocean heats up the current goes in a circle
I think the answer is B.
Because one of the factors that has prevented it from being a more unified country is its geography. It's rugged, mountainous. It's very difficult for any invading army to develop or control it.
The answer for that would be the p wave it is also one of the fastest
Distribution of mineral deposits, all other options are related to its climate.
