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.
Virgina takes the number one spot with an average internet speed of 13.7 Mbps, potentially because of the heavy military and government presence there, which has also led to state-wide affluence. Delaware, Massachusetts, Rhode Island, and the District of Columbia round up the top five.