I think it is the Microscope. Robert Hooke was a scientist who came up with the law of elasticity, the Hooke's law as well his pioneering work using the microscope to document observations of a variety of samples in his book. Hook published a book Micrographia, an accurate and detailed record of his observations through his microscope.
Answer:
the amendments
Explanation:
an amendment is a change to fix something
Most of Europe’s early cities developed near Major rivers
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Between 1200 and 1450 CE, trans-Saharan trade networks significantly supported the development of large states in West Africa. Opportunities for the taxation of trade and the control of trade goods generated wealth and resources to support the development of sophisticated government. Also, these networks encouraged the development of thriving urban centers, which increased the power and renown of states in the region.
As trans-Saharan trade developed, empires in the region repeatedly taxed and controlled trade. For example, the historical record shows that the mansas of Mali directly controlled the trade of specific goods such as metals and horses, two goods that were crucial in establishing strong military forces. Mali’s mansas also taxed the trade of key goods such as salt and copper. Similarly, other empires in the region levied heavy taxes on merchants and used the funds to support the state. The control over the trade of gold by Ghana’s rulers enabled the funds to establish and sustain a large administrative bureaucracy.
The effects of the development of trans-Saharan trade networks on West African states can be better understood by considering the earlier development of cities and states in the region. Due to the difficulty of raising livestock and growing crops in the hot Sahara, the economy of West Africa lagged behind that of North Africa until the growth of trade. Likewise, while a sophisticated civilization developed in the Niger Valley after 300 BCE, growing trade cities at the time were not joined into a larger empire. The ongoing development of trans-Saharan trade, however, provided the resources for economic and political change in the region.
Explanation:
100% on Edgenuity
Answer:her 401 plane and things that would help out the workers
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