Cause Effect
 No one is really sure. However people think it was too expensive to continue building ships.
The Ming emperor suddenly halted further construction of ships.
Ming leaders banned ships with more than two masts. There would be no further construction of ships.
 China ended up turning its back on exploration
Ming emperors disallowed foreign exploration.
 
Europeans' textiles and metals were not as well made as Chinese.
 
Trade was controlled by Imperial leaders.
 

Focus Question:
What can modern nations learn from the Ming Dynasty?