Yes, air is matter since it is made up of several different physical elements such as oxygen and nitrogen, although some of air (empty space) is not matter in the sense that it is made up of physical properties.
Many reasons, for example the each state has a different group of leaders and each state has different rules so if they were merged into 1 country , lots of the rules would be against one another and a final decision would have to be made. overall, the process would be very long and not worth it in the wnd
One famous person from the Cold War Era is Winston Churchill. After leader England in WWII, history records him as one of those that raised the specter of an "Iron Curtain" across Europe.
<h3>What Famous technology was invented in the Cold War Era?</h3>
It is interesting to note that the Internet, Transistors, Chips, and Global Positioning System were all inventions that made advancements in technology possible the Cold War Era.
Some notable event of the Cold War Era is the Containment of Russia, the arms race between the Soviet Union and the USA, the Fall of the Berlin Wall etc.
These are all notable events, people, and occurrences because they all changed the course of history.
Learn more about the Cold War Era at:
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