The history of ketchup dates back to a fermented fish sauce in 300 B.C.E. China, becoming popular due to its long shelf life. Tomato-based ketchup debuted in 1812 and later grown into a billion-dollar business by Heinz.

Despite the Silk Road’s obvious link to the trade of Chinese silks, the term “Silk Road” wasn’t coined until 1877. From commodities like vegetables and leather to intangibles like language, culture and philosophy, the Silk Routes were operational from 130 BCE to 1453 when trade with China was banned by the Ottoman Empire.

The Glorious Revolution, caused by King James II’s abuse of power, forced his peers to plead with William of Orange to invade England and remove the king. James fled to France after witnessing mutiny and would become the last absolute monarch with the signing of the English Bill of Rights, which shifted the country to a constitutional monarchy.

Islam is the second-largest religion in the world today, with a belief in the oneness of God, who is all-powerful and all-knowing. In this episode, the filmmakers cover the holy book, the Quran, the five pillars of faith, Ramadan, Mecca and more.

The Neolithic Revolution during the last period of the New Stone Age between 9,000 and 2,000 BCE saw developments in agriculture, domestication, social structure and defensive necessity.

The dancing plague of 1518 was a three-month-long dance marathon where citizens of Strasbourg danced to the point of exhaustion and even death. Some theories pose the dancing plague was caused by hallucinogenic ergot, psychological stress, or a religious cult.

The fall of Rome, a far-reaching and dominant Roman empire, was caused by internal division, corruption, tax evasion, labor shortages, religion, and invasions from more powerful armies.