Big History looks at history across all time scales from the evolution of the universe to modern times. Coffee origins can be traced back to Ethiopia and its global spread was influenced by events like the slave trade, sugar plantations, and industrialization. The journey of humans out of Africa has been reconstructed using genetic analysis of blood and DNA from present-day populations. Major historical events like climate change-induced famines and plagues have been linked to volcanic eruptions that altered the global climate. European technological advantages like horses, steel weapons, and diseases brought by trade and conquest had enormous impacts on civilizations like the Incas that lacked those advantages. Christopher Columbus' voyages opened trade between the Americas and Europe but also brought destruction