European colonialism and colonization was the policy or practice of acquiring full or partial political control over other societies and territories, founding a colony, occupying it with settlers, and exploiting it economically.
A. Silt is no longer carried down river.
Rip currents are mainly caused when the sea is rough and large waves break into the shore. the water from the previous large wave tries to find a weak spot in the incoming wave and when it finds it, the water quickly pulls away from the shore causing dangerous rip currents. This type of currents have caused numerous deaths.
Soil erosion is a recent problem in Tanzania even though the Masai have used their land for herding for so many years. This dramatic increase in soil erosion now even shows signs of an almost total destruction in the Tanzanian Maasai landscape.
The main trigger for soil erosion is the loss of vegetation cover which makes it easier for natural factors & man-made factors to cause even more damage.