In the US, there was a trade system where in West Africa would capture and sell slaves to slave traders in the US or many other European countries.
Answer:
I only know number 11: An economic conflict and a conflicted related to poverty
I think the answer is Alps.
Yes I think because if they swap with each other there would still be magnetic pulls from the same locations
Answer:
140 years is average duration of an earthquake.
Explanation:
- The Hayward fault is a geologic fault that is capable of massive destruction and is 119 km long fault western base of hills of San Francisco and is parallel to the San Andreas fault. The occurrence of an earthquake of 6.8 magnitudes in 1868 was biggest earthquake in California history.
- Recently various geologists have taken time interval of the past five large earthquakes and based on the past earthquakes data the interval of 140 years it will take to the formation of a large earthquake.