It might sound odd that Rwanda will have an established a drone network before the United States, but it makes sense for the country to deliver lifesaving cargo using drones. In developing nations, you often have to deal with unpaved -- or even lack of -- roads, heavy traffic, lack of access to transportation, among other things. With a drone network in place, a clinic can send a text message, and a drone could be there in 30 minutes if it's within 90 miles of the UAVs' homebase. That said, a startup called Flirtey recently made the first FAA-approved drone delivery in Nevada, so the industry is at least making some progress in the US.

Rwanda plans to expand its drone network's capabilities to benefit the country's economy. Zipline founder William Hetzler told The New York Times that the country wants to become "a technology hub for East Africa and ultimately the whole continent of Africa." As for Zipline, Rwanda is just the beginning; it will deploy its drones to other developing countries within this year.