Answer:
It's practiced in sparsely populated regions because of less things being in the way. This way, they can use irrigation more efficiently.
Answer:
Places around Cairo and Aswan are the largest concentrations of people in the region.
Explanation:
Concentration means how spread out things are in space. They could either be clustered or dispered. The purple on this map represents clustered, and as you can see, that Cairo is the largest city and the capital of Egypt, which is one reason why it has the largest concentrations of people.
Eastern Europe. Communism was forced into Eastern Europe during WW2. Because of this, people state that being in a communist environment brought down the economy. Hope this helped!
7 there are seven continents total