The Blue Nile begins at Lake Tana in Ethiopia and flows into Sudan from the southeast. The two rivers meet just north of the Sudanese capital of Khartoum. The northern section of the river flows north almost entirely through the Sudanese desert to Egypt, then ends in a large delta and flows into the Mediterranean Sea.
<h2>
The End of Trans-Saharan Trade Routes:</h2>
Explanation:
The factors that led to the end of trans-Saharan trade routes are:
- Civil unrest due to collapse of the Songhay Empire, the Timbuktu, by the Morracans in 1591
- The extreme desert conditions like extreme climates, excessive heat, lack of water and food etc made the travel logistics very tough. This made people opt for other transport systems
- Huge advancements made in maritime travel
- Exploration of West African trade routes
- Economic, political and social changes which led to the end of trans-Saharan trade routes
Fossils help scientists date rocks: True
Sometimes younger rock layers are found beneath older rock layers: True, because it happens with landslides and other causes.
No fossils from the Precambrian era have been found because there were no organisms at the time: False because there were organisims like algae and bacteria, and there are a very small amout of fossils from that era.
The map of Earth has changed over millions of years, but is now set: False
Answer:
A market economy is the economic system where the businesses are privately owned, with the possibility of profit.
Explanation:
A is not correct because the traditional economy still has influnce by the government, and even if it strides to privatization, the changes in it are so slow that even decades would not lead to the total change of the economic system.
B is not correct because in the command economy everything is owned by the government and unions (like the ''zadruga''), where everything is controlled by the government.
C is not correct because under a communist system everything is owned by the government.
D is correct because the market economy is an economic system where every business is owned by the private sector, meaning that the people that own businesses are able to make their own decisions, and also it is up to them and their working as to how much profit they will obtain.
