There are a great variety of languages in our world. People from different countries communicate with each others mostly by speaking English. It's an international language. Most of languages are thousands of years old and have a big history.
Also there are some languages that haven't existed before and were invented by people. For example, the most popluar language of this type of languages is Hebrew.
It was created in the 20th century, but it's interesting to know, that Hebrew's earlier version has been existing for a long time in ancient time. But this language was considered to be dead.
Now Hebrew is spoken by about 8 millions of people.