The primary use of dextromethorphan is as a cough suppressant, for the temporary relief of cough caused by minor throat and bronchial irritation (such as commonly accompanies the flu and common cold), as well as those resulting from inhaled particle irritants.
As of Q4 2016, South Korea had the fastest average internet connection in the world at 26.1 Mbit/s according to the report State of the Internet published by Akamai Technologies. South Korea's speed is almost four times faster than the world average of 7.0 Mbit/s.
Kansas is one of the most underdeveloped states in America, but it is changing fast. So fast that Kansas City now has the second fastest internet in the USA and fifth fastest in the world. That is no mean feat! The upload and download speed in Kansas City is over 1,000 Mbps and the internet here costs $70/month. Google Fiber, a division of Google Technologies, is the leading ISP here.