Answer:
5,550
Explanation:
it was 3500 BCE.
which is 5,500 years ago.
Answer: D
Explanation: The Ghana Empire, properly known as Wagadou (as Ghana was the title of its ruler), was a West African empire located in the area occupied by present-day southeastern Mauritania and western Mali. Although complex societies based on trans-Saharan trade in salt and gold had existed in the region for centuries, the introduction of the camel to the western Sahara in the 3rd century CE, opened the way to great changes in the area that eventually became the Ghana Empire.
The Ghana Empire grew rich from increased trans-Saharan trade in gold and salt, allowing for larger urban centres to develop. With these commodities being transported and traded through Ghana, the Kingdom was able to become very wealthy by taxing the goods that came through the trade center. It also helped that Ghana had many trade routes that were well protected by its large military force as this encouraged other merchants to come to Ghana for trade.
1. The world in spatial terms
The purpose of the first essential element of geography is to study the relationships between people, places, and environments by mapping information about them into a spatial context.
2. Places and regions
The purpose of the second essential element of geography is to show how identities and lives of individuals and peoples are rooted in particular places and in those human constructs called regions
3. Physical systems
The purpose of the third essential element of geography is to identify how physical processes shape the Earth’s surface and how they interact with plant and animal life to create, sustain, and modify ecosystems.
4. Human systems
The purpose of the fourth essential element of geography is to show how people are central to geography in that human activities help shape the Earth’s surface, human settlements and structures.
5. Environment and society
The purpose of the fifth essential element of geography is to show how the the physical environment is modified by human activities, largely as a consequence of the ways in which human societies value and use Earth’s natural resources.
6. The uses of geography
The purpose of the sixth essential element of geography is to show how the knowledge of geography enables people to develop an understanding of the relationships between people, places, and environments over time -- that is, of Earth as it was, is, and might be.
The Sahara desert is important for a multiple of reasons. One is that although it is a desert, there are many fertile areas of land making it great for farming and supporting life. It also acts as a natural barrier in between north and south Africa, which was able to impact trade with the South, slowing down innovation on both sides.
