One of the main problems that prevents africans from working together is:
feudalism
communism
apartheid
tribalism

Tribalism

Explanation:

The problem of Africa is not necessarily tribalism but rather it the problem is the diversity in culture. However, since tribalism is the closest option in the question; then tribalism, it is.

Africa is a continent with a wide range and varieties of tribes. The number of tribes in Africa,is estimated to be about 3,000 tribes, speaking more than 2,000 different languages.

This diversity of African communities poses a difficulty in integrating them to work together. This is so because language barrier and illiteracy are central to this problem.

Generally, African countries are highly diverse in view of some of the exclusive primordial markers, particularly ethnicity and most countries use different languages other than English. Network user interfaces to these languages are unavailable and developments in transliteration are in very early stages.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

i'm asking the same thing i asked this other cat all of