Which is the only continent that lies in all the 4 hemispheres ??

 This continent lies in all the 4 hemispheres :  northern, southern, eastern and western.

It is                 AFRICA    !!!!

Equator   ,  imaginary line that divides the Earth  into northern and southern hemispheres,  passes through middle of Africa.

African countries in northern hemisphere are   ---

Egypt      Libya      Algeria     Tunisia        Morocco 

African countries in southern hemisphere are  ----

South Africa         Namibia         Botswana           Zimbabwe          Angola

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Zero degree line of  longitude  used to divide the Earth into Eastern and Western hemispheres passes through Africa.

African countries in Eastern hemisphere are  ---

Kenya      Tanzania      Ethiopia       Uganda          Somalia 

African countries in Western hemisphere are   ---

Ghana         Mali        Senegal         Burkina Faso