Fossil fuel is a natural fuel such as coal or gas , formed in the past from the remains of living organisms e.g. : dead trees , plants, marine animals
They are significant so we can use them today for oil
There were 6 republics that were formerly part of Yugoslavia:
1) Croatia
2) Bosnia and Herzegovina
3) Slovenia
4) Serbia
5) Republic of Macedonia
6) Montenegro
Remember: All of these countries listen above<<<---- are all 'Republics'
~Happy Studying! ^-^
A globe or a map can describe the locations