The cause is the Chinese invention of the magnetic compass. The effect is the voyage of Zheng He. The invention of the magnetic compass allowed Zheng He to make his voyage.
There are no specific connections.
There is no link between the Triads or any criminal Chinese enterprises and the State of Israel. There may possibly be connections between Mossad and the Triads since many Intelligence Agencies blur the line between covert operations and actual crime, but there is no historical or explicit connection between these two groups.
The Chinese have used a similar device for navigations from between the 9th and 11th century. But who knows where and when else it might have been used? Sorry, not me:)
How can I go by finding magnetic and Non-magnetic in my home. nonsense
There is no known connections between McKinsey and Scientology. McKinsey is no a public company.
Transhistorical connections are connections between two things in history that really don't seem to go together. For example, the connection between democracy and Marxism.
what are the difference between Interdisciplinary connections o Cultural cross currents o Transhistorical connections
Climate is most useful in learning about connections between places.
= What is the different between permanent magnetic alternator and alternator? =
magnetic variation
magnetic force
magnetic variation