Most landforms change very slowly over many, many years. New mountains have formed as the plates of Earth's crust slowly collided, and others have been worn away by weathering and erosion. ... Floods and landslides can change landforms in a matter of seconds. Volcanic eruptions can also change landforms quickly.
Answer:
3
Explanation:
They came to america to work in the gold mines
The negative effects are <span>Poverty, Overcrowding, and Diseases
the positive effects are that people get jobs
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Traditional Maasai society is organized according to male age sets.