After US restrictions pushed it to launch in Rwanda, Zipline raises $1.5 billion at a $21.5 billion valuation as Uber and Walmart take its Africa-tested drones nationwide

American drone-delivery company Zipline has raised $1.5 billion at a $21.5 billion valuation after building the commercial foundation for its technology across five African countries. The financing nearly tripled Zipline’s value from the $7.6 billion valuation attached to a previous funding round about 10 months earlier.