"plains" refers to a large area of flat land with few trees.
"coast" refers to the part of the land near the sea; the edge of the land
"Bubus" is the name of clothing common in parts of Africa; they're long cloths that flow over the body
"immigration" is the action of coming to live permanently in a foreign country
"migration" is a movement (of humans or animals) to a new area for better living conditions
"Cheches" is a head wrap worn to protect the body from the sun and limit sweating; it has historical and cultural meanings, too.
A "mediterranean climate" is a very pleasant climate with warm, dry summers and cool, mild winters.
A river "delta" is an area of low land where a river spreads into many smaller rivers near the sea
A "empire" is a group of states or countries under the rule of an emperor or empress.
"Refugees" are a people forced to leave their country in order to escape life threatening situations.
