Answer:

• Asia contains around 30% of the world's land area and 60% of the world's population.
• Asia is the only continent that shares borders with two other continents; AFRICA and Europe.
• It sometimes joins with a third continent, North America, in the winter by ice forming in the Bering Sea.
• Asia is MUCH more developed than Africa.
• Asia although smaller in terms of land mass, has half of the worlds population and although Africa's is growing much faster.

There are 54 countries in Africa and literally thousands of different language groups and cultures. Africa is probably the most CULTURE- and language-dense continent on Earth, with many of its countries having at least 10 to 15 LANGUAGES, which can completely change every few kilometers.

And depending on how you define “Asia”, it has anywhere from 20 to 48 countries (the latter including India, Russia and Turkey), also with thousands of different language groups and cultures. India alone has more cultures and languages than all of Europe.

So which Asia and which Africa are you talking about? As you’ve phrased it, your question is meaningless.