It took over "2 million years" for the human population to reach 1 billion, but once it went past the 1 billion mark, it only took another 200 years for it to reach "7 billion".
In the late 1960s, the "human population growth rate" had reached its peak where the population growth rate had gone above 2.5% a year in the developing countries.
The population growth rate of the entire world had reached a little above 2% a year back then.
Answer: Weaving, sculpting, carving, music, and dance are all important art forms in western and central Africa. These artistic forms serve both practical and ceremonial purposes. They often have religious meaning, and they may be used as a form of expression.