By working constantly and giving many sincere speeches about the importance of independence<span>.</span>
The correct answer should be Religious Tolerance.
The Philadelphia area constituted colonies that wouldn't prosecute people on religious basis, which meant that Catholics, Protestants, Puritans, and all other types of Christians could live there without being bothered about their religious choices or what they practiced.
The African states were in a very big mess after they gained independence. The reasons for that were numerous. In the same boundaries there multiple people from ethnic groups that traditionally had lot of tensions between them, different religions that were not fond of one another was also existing in the same territories, lot of leaders turned out to be dictators, and also lot of the people that turned out to run the countries did not had political experience.
All of that resulted in lot of violence, separatist movements, genocides, coups, civil wars, further partition of the countries. The ordinary people suffered the most, as always, living on terrible poverty and constantly being on alert because the safety was non-existent.
An ideological division between western and eastern Europe.
The Iron Curtain separated Eastern Europe (which is under the USSR control), which contained Eastern Germany, Poland, etc, in which these places were placed under a Communist government.
On the other hand, Western Berlin (As Berlin was also split), and the three western nations parts (later placed together to become Western Germany), was given a democratic-like government instead, and, with western aid, was able to grow economically and was able to be repaired quickly.
Because condition inside the West was better, Eastern Germans quickly moved west-ward in search for better conditions, leading to the USSR building the Iron Curtain to keep East Germans from escaping, which led to the symbol of the division between the Communist nations and the Democratic.
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Answer: An ideological division between western and eastern Europe.
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hope this helps