Secular means not connected or pertaining to religious matters / beliefs.
Thus, a secular society is one without a specific religion, such as the UK.
An example of a non-secular society would be one with a state religion.
D) The power of the Supreme Court to declare a law unconstitutional.
This demonstrates an example of checks and balances because it suggests that there has been a violation of the Constitution. Also, it limits and prevents other branches from having too much power.
The year that he presumably wrote Oedipus and The King around 430 B.C.E. while Oedipus at the Colonus was presumably wrote around 406 B.C.E.
The major reason for Zheng He's voyages during the 15th century was to increase the importance of Chinese trade as well as the reputation of his nation, China. The largest port in the world at that time was Calcutta in India where the Chinese spent more time trading with the locals.