When the Vikings first arrived in Greenland, it was uninhabited. However, the Inuits soon arrived, one the vikings had already made a settlement. After first contact, there was already tension between the two groups.
The Vikings in Greenland did not establish trade with the inhabitants of North America at the time. This left Norway as their only source of materials. However, multiple factors such as icebergs and the Black Death caused issues with trade.
The farming methods used by the Vikings in their “home” were brought to Greenland. However, these techniques were not suited to the environment. They also kept certain livestock which used a large amount of fodder. Adding on to this, the natural vegetation was used in order to build homes.
Culture plays a large part in any empire. This helps a society to adapt to changes. The hunting methods that the Vikings originally developed did not work well in the environment of Greenland. Their preference for a specific culture and style soon led to their downfall, as they were unable to adjust to the new environment.
Near 800 AD, Greenland's climate began to warm up. In fact, this climate was very similar to the climate of modern Greenland. While this sudden change was unexpected, it overall benefited the Vikings.
Immediately following the "Warm Period," Greenland went though a mini ice-age. This occurred in the 14th century, after the 13th century which was when the warmth ended. This cold weather caused many issues, specifically with trade and livestock.