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The day Caesar crossed the Rubicon – level 3
10-01-49 BCRome had already been a republic for over 400 years, covering...
The day bitcoin was created – level 1
03-01-2009Bitcoin is digital money. It starts on January 3, 2009. Satoshi...
The day bitcoin was created – level 2
03-01-2009Bitcoin is a digital currency. It was created on January 3,...
The day bitcoin was created – level 3
03-01-2009Bitcoin is a digital currency. It was created on January 3,...
The day the plane was invented – level 1
17-12-1903People want to fly. People use balloons with hot air at...
The day the plane was invented – level 2
17-12-1903People always wanted to fly. In the 18th century, it was...
The day the plane was invented – level 3
17-12-1903Since the beginning of our civilization, people have had a dream:...
The day the first human heart was transplanted – level 1
03-12-1967There is a bad car accident. It is in Cape Town....
The day the first human heart was transplanted – level 2
03-12-1967There was a terrible car accident in Cape Town on December...
The day the first human heart was transplanted – level 3
03-12-1967There was a terrible car accident in Cape Town on December...
