It led to the fall of the Qing government.
That is because the Czar knew that fighting the Austria-Hungary empire and Germany was inevitable and war was brewing. Of course, Russians did not see the end of the war due to the Bolshevik revolution that had them retreat from the war and cease their participation and overthrowing the king.
Why, The Wilmot Proviso amendment would have closed California and New
Mexico to slavery in 1846 as a requirement for their annexation,
but Congress did not pass the proviso.