Andrew jackson led the united states forces during the battle of new orleans
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Trans-Saharan trade requires travel across the Sahara between sub-Saharan Africa and North Africa. While existing from prehistoric times, the peak of trade extended from the 8th century until the early 17th century. The Sahara once had a very different environment. In Libya and Algeria, from at least 7000 BC, there was pastoralism, the herding of sheep, goats, large settlements, and pottery. Cattle were introduced to the Central Sahara (Ahaggar) from 4000 to 3500 BC. Remarkable rock paintings (dated 3500 to 2500 BC), in places which are currently very dry, portray vegetation, and animal presence rather different from modern expectations.[1]
As a desert, Sahara is now a hostile expanse that separates the Mediterranean economy from the economy of the Niger basin. As Fernand Braudel points out that crossing such a zone (especially without mechanized transport) is worthwhile only when exceptional circumstances cause the expected gain to outweigh the cost and danger.[2]
Trade, beginning around 300 CE, [3] was conducted by caravans of camels. According to Ibn Battuta, the explorer who accompanied one of the caravans, the average size per caravan was 1,000 camels; some caravans were as large as 12,000.[4][5] The caravans would be guided by highly paid Berbers who knew the desert and could ensure safe passage from their fellow desert nomads. The survival of a caravan was precarious and would rely on careful coordination. Runners would be sent ahead to oases so that water could be shipped out to the caravan when it was still several days away, as the caravans could not easily carry enough with them to make the full journey. In the middle of the 14th century Ibn Battuta crossed the desert from Sijilmasa via the salt mines at Taghaza to the oasis of Oualata. A guide was sent ahead and water was brought on a journey of four days from Oualata to meet the caravan.[6]
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hope this help plese mark branlest
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Diseases are able to spread around the world more quickly.
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did this a few weeks ago u can use one of these:
#1-The invention of the telephone is an important device for facilitating human communication. The telephone was a very important invention of the nineteenth century which helped improve communications between people at a distance. The telephone provides a big change to existing methods of conversation at the time of its invention because jobs involved in conversation no longer needs to be in each other’s presence to communicate. Literacy was promoted through the use of the telephone due to the fact that people need to read and write in order to manufacture and operate telephone technologies. Today, the telephone is used as a one-way broadcasting medium for transmitting recorded messages.
or u can use this one-The lightbulb was the most significant invention. Other inventions such as the airplane and telephone have substitutes, whereas the lightbulb has one which isn’t very good. Without the lightbulb, people would have to use fire or sunlight as light sources… or electricity in some other way. Sunlight would be the most natural source of light, thus it will be the easiest to use, but fire can be moved to different places and can be controlled. Due to this, it is likely that sunlight would be used during the day, and torches and candles will be used in the night. This means that cars will have to find a way to use torches/candles for headlights, and structures will have to be made out of non-flammable substances. In conclusion, the lightbulb is the most useful and significant invention.
Explanation: Hope this helps and gl
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At its highest point, the vertical velocity is zero. As the object falls toward Earth again, the vertical velocity increases again in magnitude but points in the opposite direction to the initial vertical velocity.
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