World History - Second Persian Invasion

Xerxes launches an attack on Greece by land and by sea, culminating in the Battle of Thermopylae. Watch the next lesson: https://www.khanacademy.org/humanities/world-history/ancient-medieval/classical-greece/v/prelude-to-the-peloponnesian-war Missed the previous lesson? Watch here: https://www.khanacademy.org/humanities/world-history/ancient-medieval/classical-greece/v/beginning-of-the-greco-persian-wars World History on Khan Academy: From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy