Simplify the following text for a Grade 10 native English-speaking person.
Original: It provides a combination of personal revelation and eyewitness accounts of great events , such as the Great Plague of London , the Second Dutch War and the Great Fire of London .
Simplified: It provides a combination of personal notes and eyewitness accounts of great events , such as the Great Plague of London , the Second Dutch War and the Great Fire of London .