The Mongols claimed the largest consolidated land empire in history. Seemingly the only way to keep them out was to put the Himalayas between you and them. And many historians believe their power stemmed from an incredibly simple technological innovation: the stirrup.
So the question is to find the best answer that could support and complete the question and the answer to your question is letter D. Ending their alliances system. I hope you are satisfied with my answer and feel free to ask for more if you have clarification and questions
Can you give more information
Answer:
good luck i think the answer is B
Explanation:
sorry if im wrong