An earthquake is caused by a sudden slip on a fault.When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.
The Dutch and their ancestors have been working to hold back and reclaim land from the North Sea for over 2000 years. Beginning around 400 BCE, the Frisians were first to settle the Netherlands
