Short answers, pulled from the story.
The word peace entered English from the Anglo-French term pais, which itself derived from Old French pais and traces back to Latin pax. This linguistic path includes meanings such as tranquility, absence of hostility, and harmony.
The United Nations was founded in 1945 after World War II to stop wars between countries and provide dialogue platforms. UN peacekeepers called Blue Helmets enforce accords but receive no own military force, relying instead on voluntary contributions from member states.
Mahatma Gandhi developed Satyagraha philosophy practice nonviolent resistance deployed campaigns Indian independence earlier struggles South Africa. The word satyagraha was coined through a public contest Gandhi sponsored newspaper Indian Opinion when realizing neither Hindu English language fully expressed meanings intentions talking about nonviolent approaches conflict.
According to 2017 Global Peace Index Iceland most peaceful country world Syria least peaceful one. The index evaluates peacefulness countries based 23 indicators absence violence fear violence.
Periods relative peace Europe world known Pax Britannica 1815-1914 Pax Europaea Pax Americana since 1950s Pax Atomica also since 1950s. This era represents a time of relative peace following the Napoleonic Wars until the outbreak of World War I.