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what do people build to cross deep rivers or valleys?
Valleys can effect people by the temperature because the trees from the higher land create a lot of shade so people who live in valleys have to take different measures than other people, like wear coats outside, or turn on the heat.
Deserts were not a major economic feature of river valleys. People living in the river valleys relied heavily on agriculture.
Uhm... Travel?
they settle in river valleys to grow crops and build cities
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Ethyopuans
in the valleys or on planteaus
fertile valleys :D
A bridge
Yes, and valleys and coastlines and beaches and cities and towns and people.Yes, and valleys and coastlines and beaches and cities and towns and people.
In the valleys and high plateaus of the Andes