Unverified50% confidenceFactExact time
历史上北美大平原曾有约6000万头野牛，19世纪后半叶因商业猎杀、铁路建设和政策性屠杀骤降至约一千多头
1
Sources
50%
Confidence
Long-term
Relevance
8/12/2026
First Seen
Sources
Related Claims
Cite This Claim
Stable URI
https://kongchang.com/claim/737014API
curl https://kongchang.com/api/v1/knowledge/claims/737014MCP
get_claim(id=737014)