Who was the first person to go into space? And when?
        
        
          
            History of people
          
        
        
          
            96
          
        
        
          The 20th century was the time from 1901 to
        
        
          2000. In the 20th century there were many
        
        
          events, inventions, and discoveries that
        
        
          changed people’s lives for ever.
        
        
          
            World wars
          
        
        
          There were two terrible
        
        
          world wars during the
        
        
          20th century. World War I
        
        
          lasted from 1914 to 1918.
        
        
          World War II lasted from
        
        
          1939 to 1945. Millions of
        
        
          soldiers and civilians
        
        
          died in these wars.
        
        
          
            Tank
          
        
        
          20th century
        
        
          Nearly three-quarters of France’s
        
        
          electricity is made at nuclear power
        
        
          stations. This one is on the River Seine.
        
        
          The tracks stop the
        
        
          heavy tank sinking
        
        
          into mud.
        
        
          A British fighter aircraft
        
        
          from World War II
        
        
          
            Nuclear power
          
        
        
          The first nuclear power station
        
        
          was opened in 1954. Today, there
        
        
          are about 400 of them in the
        
        
          world. These power stations make
        
        
          dangerous waste. Some people
        
        
          think they should be closed down.
        
        
          
            British
          
        
        
          
            air force
          
        
        
          
            symbol
          
        
        
          This is Sirius, a ship
        
        
          owned and used by the
        
        
          Greenpeace organization.
        
        
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          .