Climate change is a complex phenomenon, and its impact on historical populations can be difficult to determine. In the case of the ancient Viking community in Greenland, there is evidence to suggest that climate change played a role in their collapse, but it was likely not the only factor.

The Vikings first settled in Greenland in the late 10th century, and they established several colonies along the coast. These colonies were successful for several centuries, and the Vikings were able to thrive in Greenland's relatively mild climate. However, around the 14th century, the climate in Greenland began to cool, and the Vikings were faced with increasingly harsh conditions.

The cooling climate made it difficult for the Vikings to grow crops and raise livestock, and they were also increasingly threatened by attacks from the indigenous Inuit people. As a result of these factors, the Vikings were eventually forced to abandon their colonies in Greenland.

While climate change was a significant factor in the collapse of the Viking community in Greenland, it is important to note that it was not the only factor. Other factors, such as political instability and economic decline, also played a role.

Here is a more detailed look at the evidence that suggests that climate change played a role in the collapse of the Viking community in Greenland:

* Ice core data: Ice core data from Greenland shows that the climate began to cool around the 14th century. This cooling trend was likely caused by a combination of factors, including changes in the sun's output and changes in the ocean circulation.

* Archaeological evidence: Archaeological evidence from Greenland shows that the Vikings were increasingly struggling to survive in the harsh climate. For example, there is evidence that the Vikings were forced to build larger and more elaborate houses in order to stay warm.

* Written records: Written records from the Vikings also provide evidence of the harsh climate conditions. For example, one Viking chronicler wrote that "the winters were so cold that the sea froze over, and the ice was so thick that it could not be broken by any ship."

Overall, the evidence suggests that climate change played a significant role in the collapse of the Viking community in Greenland. However, it is important to note that other factors, such as political instability and economic decline, also played a role.