The traditional economic practice in Africa is primarily herding. Many African tribes and communities regard cattle as part and parcel of their lives and wealth. For example, the Maasai tribe found in Tanzania and Kenya have for centuries engaged in herding as their way of life, a tradition that is very much alive even today.
The Maasai are semi- nomads. They traverse the land with their cattle in search of pasture. They leave the women and the little ones behind in their Kraals as they travel considerable distances to look for pasture. They do not dwell in urban areas but in the open plains where their cattle are free to graze. However, they have taken their children to school and a new generation that is savvy of current times has emerged but still fiercely proud of their traditions and way of life.
If I understand you correctly he cleans 4 tons every 2 years well 4 is double 2 so in 4 years he would have cleaned up 8 tons. They are trying to trick you with the larger number it has nothing to do with that big number.
There are a couple of answers to this:
A: A lot of people back then were heavily Catholic, the Catholic church claimed that the Earth was flat, while others believed the Earth was round.
B: Back then, obviously they didn't have airplanes or satellites, thus people believed the Earth was flat. The reasoning of this is because, if you were to look outside right now, the Earth does look like it could be flat. (that is because you have to be at a certain level of elevation to see the curvature of the Earth). Eventually though, people started reasoning and came to the conclusion the Earth was round. (They were proven right when aerospace technology came around.)
Western Europe is highly developed and heavily industrialized region, it is one of the most developed regions in the world. This part of the continent has multiple countries though, and while there are some similarities in their industrial parks, there are also differences, thus the generalization will be only partially efficient in describing their industries.
In general, all of these countries tend to have very developed tourism sector, and it is no wonder considering that they are one of the most visited places in the world. The service industry is also at the top of the list, as the tertiary and quaternary occupations are the leading ones. The agricultural industry is also very strong, with products differing from one country to another, but it is all on a high level. The industrial sectors such as the automotive industry, chemical industry, arms industry, fashion and design industries, energy industry, all are highly developed and are part of the industrial parks of the Western Europe region.
The river that forms the border is known as the Paraná River
