Yes. Libya, the recently founded (and unrecognised) Azawad and the People's Republic of China are all republics with a Chairman as Head of State instead of a President. However, in 1982, the Chinese Central People's Government started using "President" as the official English name of their Head of State, though in Chinese, the title remains Chairman.
a leader of our country is called a president
If a country is governed by another country it becomes a colony.
The period of time during which a president is in charge is called his (or her) term of office.
They called it the confederate army but I don't know who was the president
They called it the confederate army but I don't know who was the president
This differs by country. In some countries, there is a presidential council, with the 'president' being the head of the council. Reask your question specifying the country, or see related answers.
Actually, several presidents have been called that in different countries. George Washington is the US president so honored.
Uganda's President is Yoweri Museveni! Uganda is in Africa if you didn't know...
They called it the confederate army but I don't know who was the president
The president appoints "Ambassadors" to serve in other countries.
It is called a Democratic country. I hope this helped
George Washington