About different countries

Every country in the world has different languages.There are more then 20 different languages in the world.I wonder how much languages in the world.How come nobody can speak all of them.I wish I could speak all the languages in the world.Here are some places with different languages.Ethopia,Iran,Italy,Spain,China,Russia,New Zealand,Japan, and Chad.Now you know some of the different countrys.See you later.