You'll lose everything you may have as a US citizen.
Anyone who is a citizen of the Vatican maintains their original citizenship of their country of origin. Should they lose their Vatican citizenship they revert to their original nationality or, lacking that, automatically become Italian citizens.
No - citizenship is not transferable from one person to another !
You never lose US citizenship unless you either renounce it voluntarily or by serving in the army of a country that is in war with the US.
If you "renunciate" something, you give it up.
to lose or give up
Apply at the nearest embassy or consulate of your country of citizenship.*Your case would not be approved usually if you do not have another citizenship.
expatriation
Hi, if you are born in a country you get a citizenship of that country ( that is single citizenship). If you migrate to another country and get a citizenship from that country but you do not want to give up the citizenship of your home country then it is a dual citizenship.
Look - up U.S. Immigration & Citizenship Your Complete Guide
No, a former president cannot give up their citizenship. Once someone is a citizen of a country, they retain that citizenship unless they voluntarily renounce it through a formal process. Being a former president does not exempt someone from the normal rules and procedures regarding citizenship.
give up your Indian citizenship
It depends where his parents are from. If a child has US citizenship,the US does not require him to give up the US citizenship ever. But, let's say the parents are from Japan, government of Japan requires him to choose between Japanese or American nationality and give up one of them.