It is estimated several million every year - it's impossible to count exactly because many will go unnoticed - they may be very small or happen in remote areas.
source https://www.google.co.uk/url?q=https://ds.iris.edu/ds/nodes/dmc/kb/questions/1/is-the-number-of-earthquakes-increasing/&sa=U&ved=0ahUKEwioxafr7YrUAhUiKsAKHXV9CosQFggXMAQ&usg=AFQjCNF6uKnsRqkmOkKYxE3WbwIAptWGUA
Answer: The Byzantine Empire influenced many cultures, primarily due to its role in shaping Christian Orthodoxy.
Explanation:
What was happening in it before it turned in a cave
Answer: planting vegetation terracing, retaining walls
Explanation:
Mass wasting or mass movement is a natural process of movement of materials such as soil, boulders, stones and others down the slope under the influence of gravity. This is responsible for mudslides and landslides.
The planting vegetation terracing will help in prevention of mass wasting as the plant roots will hold the soil. It will be beneficial if the vegetation is grown on the steps that is terracing.
The retention of walls will prevent the movement of the materials down the slope. Thus will stabilize and control the mass wasting.