Why do you feel the need to insult a stranger when they are telling you the truth?
First I didn't insult you, I commented on your lack of knowledge about Greenland because you made multiple statements that are so obviously incorrect that the only possible way a person could actually believe they were true was if that person knew nothing at all about the country. Second, many of the things you have written are pants-on-fire false, and now when presented with direct evidence that contradicts your statements, you chose to ignore the evidence, and double down on your fact-free views. So, if you don't want you ignorance pointed out in public, don't put it on display.
Greenland was warmer in the past and got a lot colder... For example, the following proves my case, Greenland was much warmer in the past than it is today
The link you provided says the Viking colonies died out sometime around the early 16th century, which is in the middle of the Little Ice Age (~1300-1870), while it does suggest that temperatures may have dropped in the later years, that's only one of many possible reasons for the destruction of the settlements put forth. And it should notice that a no point does it make a comparison between today's temperatures and those of Viking settlements. Meanwhile, this study disputes the notion that Greenland was much warmer when it was first colonised based on analysis of glacier sediments which indicate that Greenland's glaciers did not undergo significant changes during the period that the Vikings had settled the island. If they are correct it shows that the Viking settlements did not enjoy a climate that was as warm as that of today, because if it had been warmer, then the glaciers should have shown similar or greater melting (over the course of 500 years) which they do not.
use the Scientific Method, please.
Frankly, I wonder how you think you are applying the scientific method here.