Answer: I believe the answer is mountains.
Answer is drought. When rain doesn't fall for a long period of time it is a drought. This causes animals to have to relocate/ search vigorously for water. Since there is no rain, it becomes difficult. Plants will start to die and crops won't grow
They were not free of foreign rule in ww2. They werent free till the early 1990s
There are two main forms of return migration: voluntary return and forced return. Data on forced return are usually collected by national and international statistical offices, border protection and immigration law enforcement agencies. The International Organization for Migration (IOM) collects data on assisted voluntary return and reintegration programmes that it implements worldwide.
