Scientists believe that the Grand Canyon was once covered by ocean
Answer:
The European Union is a unique economic and political union between 27 EU countries that together cover much of the continent.
Yes, this is true. Nomads are people who travel according to where their resources are.
Answer:
sea trade
Explanation:
The control of sea trade, the chief source of Portuguese wealth in the East, was assured by the defeat of Muslim naval forces off Diu in 1509.
Portugal's main natural resources include fish, forests (cork), iron ore, copper, zinc, tin, tungsten, silver, gold, uranium, marble, clay, gypsum, salt, arable land and hydropower.