Explain the HISTORICAL CONTEXT behind the Q and A below
All of the following statements are factually accurate. Which would best explain Béla IV's reasoning for inviting the Cumans into Hungary as mentioned in the third paragraph? A: Cumans were nomadic warriors and were familiar with the Mongols' military tactics

Paragraph 3: When the Mongols invaded in 1241, we sent requests for military aid to the papacy, the Holy Roman Emperor, the king of France, and others. But from all of them we received only words of support. We, for shame, resorted to inviting pagan Cumans* into our kingdom