Why did conflicts continue to erupt in many african countries even after they had gained independence

There are many reasons for this. In the past the division of borders did not respect local nations, so in some countries enemy nations were grouped together, local leaders for whatever reason might have instigated these differences instead of working on them, there is the case of the Rwanda Genocide in 1994 where the government majoritarily composed of Hutu promoted the massacre of the Tutsi. Also there are economic considerations, land means potential control over minerals and oil, for instance South Sudan retains 75% of the former Sudan's oil reservation, in Angola there were bloody conflict between the government which took care of the oil and the rebels who controled the diamond mines. It is also possible to add religious conflicts, mainly Muslims versus Christian over the continent.  

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d