It was the western hemisphere's largest empire ever, with a population of nearly 10 million subjects. Yet within 100 years of its rise, the Inca Empire would be no more. The rise and fall of the Inca empire: | TED-Ed

In less than 100 years, the Incas rose from a small kingdom of the Andes to become the largest empire of the Americas. A civilization of gold power and ingenuity. In this new series, discover the full story of the dynasty that built the empire, conquered millions, reshaped South America, and left behind enduring mysteries. Watch Incas: The Rise and Fall, premiering 14th December at 8pm, on National Geographic UK | National Geographic UK