Final answer:
The decline of Kievan Rus was significantly influenced by the Mongol Invasion and internal disputes, but not by natural disasters, which did not play a significant role during this period.
Step-by-step explanation:
Factors Contributing to the Decline of Kievan Rus
When examining the major contributors to the decline of Kievan Rus, it's important to identify the historical events and circumstances that played a role in its weakening. Notably, the Mongol Invasion in the 13th century had a devastating impact on Kievan Rus, with the Mongols sacking and burning cities, and imposing heavy tribute on the Slavic peoples. In addition to the external Mongol threat, internal disputes significantly weakened the state structure and coherence, leading to a fragmentation of power among different princes and regions. The Teutonic Crusaders also posed a threat in the 13th century to the neighboring regions, although their direct impact on Kievan Rus itself was less significant compared to the Mongols.
However, one factor that was not a major contributor to the decline of Kievan Rus was natural disasters. While natural disasters such as plagues and famines did affect other regions, they did not play a significant role in the decline of Kievan Rus during the relevant period. For example, the Black Death had a profound impact on many societies, but it arrived in Europe well after the initial decline of Kievan Rus. Thus, natural disasters, while impactful in many historic contexts, were not a major contributing factor to the decline of this particular medieval state.