Why did Han rulers create civil service examinations?

China has always functioned better with a strong civil service, but after creating China by force, Han rulers had to look for new ways to select regional administrators.

Explanation:

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

b.lincoln had the victory he wanted for emancipation