Meaning: If we all worked together for peace, the world would be a more pleasant and harmonious place to live.
Choice of Words: World means the entire planet Earth. Better means more desirable or more excellent.
Alternative Expressions
The world would be more pleasant.
Meaning: This sentence means that the world would be a more enjoyable or agreeable place if certain changes were made.
Choice of Words:World refers to the entire planet and everything on it, including all the people, animals, and places. Pleasant means enjoyable or agreeable. When you put them together, "The world would be more pleasant" means that the planet and everything on it would be more enjoyable or agreeable.
The world would be happier.
Meaning: This sentence means that the world would be a more joyful or content place if certain changes were made.
Choice of Words:World refers to the entire planet and everything on it, including all the people, animals, and places. Happier means more joyful or content. When you put them together, "The world would be happier" means that the planet and everything on it would be more joyful or content.