As they had no correct method of communicating
South american civilization:
- The invention of various type of plants that could be used for medicinal purposes.
- The invention of various tools that could be used for artworks
Meso American civilization:
- The invention of early agricultural land structuring for irrigation system
- The invention of earliest calendar to distinguish time/period
North American civilization:
- Popularized the use of tobacco (now it become the most used drug in the world)
- Invent several techniques to raise animals.
A major neutral country was, as an example, Yugoslavia (the leader non-aligned movement), which supported trade relations with both NATO and the Warsaw Pact. In the later years of the Cold War, China, became mostly neutral (though some may say that they became more Western Aligned). Throughout the Cold War, India officially didn't join any alliance, however they were often supported by the Soviet Union in conflicts against China or Pakistan.
Because they were slaves and only men were citizens and only citizens were aloud to vote
