Tesla's success at demonstrating the large, present day commercial potential of electric cars, causing every major auto maker on the planet to shift directions and chase after them.

SpaceX wrecking the old launch club and proving booster landing as a practical and economically successful approach. Helping to ignite a new space race in the process.

Mobile fully coming into its own thanks to the iPhone and later the follow-on clones. While the iPhone wasn't created this decade, the extreme share of its impact was in this decade (the app store is about 11 1/2 years old). It's a truly massive system overall, worth trillions of dollars; it has reshaped the majority of all communication and financial interaction globally in the span of one decade (comparatively few people globally had smartphones by Jan 1st 2010). Also, mobile sparking the gig economy (for better or worse, we'll see over time), the sharing economy (Uber, Lyft, Airbnb, etc), the delivery services boom. Faster mobile and the improvements of the smartphone also hyper charged social media. The monetary investment needed and the number of people required to build all of that is rather epic.

The spread of inexpensive, commercial drone technology.