Final answer:
Micro trends affect smaller segments and are short-lived, while mega trends have global impacts and last longer. KLM Royal Dutch Airlines could be an example of setting mega trends in the airline industry through sustainable and innovative practices.
Step-by-step explanation:
The difference between a micro trend and a mega trend largely lies in their scope and impact. A micro trend affects a smaller segment of the population and tends to be short-lived, while a mega trend is significant, has a wide-reaching impact on a global scale, and is influential over a long period. When we speak about what makes KLM a mega trend, it could be interpreted as referring to KLM Royal Dutch Airlines which might set industry-wide trends through their innovative practices in sustainability or customer service, thus influencing global air travel and economy substantially. However, the term KLM is not widely recognized on its own as a specific mega trend without further context.