I got quick question. If i puppeted a city which have wonder notre dame will that city give me those 10 happiness? Or i need to annex it to get notre dame bonus?
Puppet is fine. You don't need to annex to get any building/wonder benefits.
I got quick question. If i puppeted a city which have wonder notre dame will that city give me those 10 happiness? Or i need to annex it to get notre dame bonus?
Varies from game to game, and depends on whether civs and CSs that started the game still exist. From Civilopedia: "The amount of delegate support required to win [diplo victory] depends on the number of civilizations and city-states in the game, and can be seen on the World Congress and Victory Progress screens. If no civilization receives enough support to win a World Leader resolution, the two civilizations that received the most support will permanently gain additional delegates."
No new civs. Only post-BNW DLC have been map packs.
If by "give up" you mean Retire, you lost the game and cannot win during "just one more turn time." you can go through the motions of winning, but no victory screen will pop up.
You can reload an autosave from before you retired and play on from there, but it would not be appropriate to submit such a game in a competitive venue, like HOF or GOTM.