How was the development of humanism an international phenomenon

Humanism is a current that originated at the beginning of the 19th century. It emphasizes the value of human beings and focuses on the influence they can have over the environment they live in. it also favors the practice of Critical Thinking over the acceptance of any given Dogma or superstitions.

The spread of Humanism was critical to the development of major events like the French Revolution and the subsequent American Revolution, as Humanism disregarded the "holy" authority that was supposedly granted by God to a ruling king. The form of government would gradually evolve from the transition of monarchies to the democracies we know nowadays. This form of government was widely adopted by many nations.

your list doesn't mention any of them at all.

and what does "these" mean anyway ?

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know