Final answer:
The development and widespread use of smartphones is one of the most important technological innovations from 1990 through today.
Step-by-step explanation:
In my opinion, one of the most important technological innovations from 1990 through today is the development and widespread use of smartphones. The introduction of the iPhone in 2007 revolutionized how we communicate, access information, and interact with technology.
Smartphones have become an integral part of our daily lives, providing us with instant access to the internet, social media, email, and countless apps. They have transformed various industries, such as entertainment, education, healthcare, transportation, and more.
The ability to have a powerful computer in our pockets has opened up new opportunities and possibilities, allowing us to connect with people around the world, learn new things, and navigate our lives with ease.