We know this thanks to archaeologists who excavated many places and discovered that many early civilizations gathered around large rivers where they could develop agriculture. This was seen in places such as Mesopotamia, India, China, Egypt, etc.
Answer and Explanation:
The seven exceptions to the Fourth Amendment are exigent circumstances, search incidental to a lawful arrest, consent, plain view, caretaker function, inventory/impounded vehicles and motor vehicle.
Motivations for colonization were to extract gold and silver from the Americans, to stimulate the Spanish economy and make Spain a more powerful country.Spain was also aiming to convert all native Americans to Christianity.
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The turning point in Greek history is considered to be the "Peloponnesian War", since it was during this time that Sparta waged war against Athens and significantly diminished the Greek influence in the Mediterranean.