“The main question that intrigued us is, what is that mystery which changed humanity?” asks Sangeeth Varghese, three-time author, leadership thinker, and president of a large international institution based in Europe. Varghese and his son Zac found themselves pondering over this question while writing their latest book, Hidden Links: How Random Historical Events Shaped Our World.

The book, which will be published on July 24, seeks to uncover hidden connections between random historical events. The father and son are eager to share what they believe is a major finding in the book—the fact that women’s freedoms suddenly started declining during a period of 200 to 250 years. The duo’s interest in history was born out of discussions and debates on the subject. Zac, all of 12 years old, bears the impressive moniker of “the world’s youngest historian”, and wrote his first two books, World History in Three Points and its sequel, More World History in Three Points, at age 10.