The spread began in the 7th to 9th century, originally brought to North Africa under the Umayyad Dynasty. Trade networks were extensive, spanning through north and west Africa which created a medium in which islam peacefully spread through the merchant class.
Answer:
And, water is called the "universal solvent" because it dissolves more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
I found this on google because I am not good at explaining things. But I hope this helps you.
No barriers to trade from nation to nation
Answer:
Topographic maps are map that show elevation through lines. When a slop is steep, the lines on a topographic map will be closer together.
Explanation:
To measure wind or gas current
