It is the excessive use of credit. The shares trading system crash of 1929 touched off a chain of occasions that dove the United States into its longest, most profound monetary emergency in its history. It is awfully shortsighted to see money markets crash as the single reason for the Great Depression. A solid economy can recuperate from such a compression.
It was the Mayans who built an ancient civilization, in what is now Mexico and Central America. They had an incredibly advanced civilization but were overcome by European settlers.
The Ming Voyages. Asia for Educators. Columbia University. From 1405 until 1433, the Chinese imperial eunuch Zheng He led <u>seven</u> ocean expeditions for the Ming emperor that are unmatched in world history.