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The day HIV was discovered – level 2
23-04-1984In 1981, doctors found that five men from Los Angeles had...
The day HIV was discovered – level 3
23-04-1984In 1981, five men from Los Angeles were reported to have...
The day Leonardo Da Vinci was born – level 1
15-04-1452Leonardo da Vinci is born on April 15, 1452, in Italy....
The day Leonardo Da Vinci was born – level 2
15-04-1452Leonardo da Vinci was born on April 15, 1452, into a...
The day Leonardo Da Vinci was born – level 3
15-04-1452Leonardo da Vinci was born on April 15, 1452, into a...
The day Abraham Lincoln was shot – level 1
14-04-1865Abraham Lincoln is a president in difficult times. When he is...
The day Abraham Lincoln was shot – level 2
14-04-1865Abraham Lincoln was a president in difficult times. When he was...
The day Abraham Lincoln was shot – level 3
14-04-1865Abraham Lincoln was a president in turbulent times. During his presidency,...
The day the human DNA was mapped – level 1
14-04-2003In 1990, scientists begin a special project. They want to map...
The day the human DNA was mapped – level 2
14-04-2003In 1990, scientists began a project with the goal of mapping...
