Answer:
D
Explanation:
Secularism is the idea of separating religion from the state (as in, the government). It typically occurs in more developed countries.
Airplanes and chemical warfare were technological advances during world war 1.
No provisions were made for an executive branch to enforce the laws nor for a national court system to interpret them. A legislative Congress was the sole organ of the national government, but it had no power to force the states to do anything against their will.
