<span>Mesopotamia is a Greek word
meaning 'between the rivers'. The rivers are the Tigris and Euphrates
which flow through modern Iraq. The Euphrates also flows through much of
Syria.
Mesopotamia is made up of different regions, each with its own
geography. The geography of each area and the natural resources found
there affected the ways that people lived.
</span>
I believe the answer to be C. checks and balances
Answer: The Iron Curtain formed the imaginary boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolized efforts by the Soviet Union to block itself and its satellite states from open contact with the West and non-Soviet-controlled areas.