<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Who would you say is the worst president of all-time?
<|assistant|>
I would say that the worst president of all-time is James Buchanan, who served from 1857 to 1861. During his term, the nation plunged into the Civil War after the South declared its independence and seceded from the Union. He was largely seen as an ineffective leader, being unable or unwilling to halt the divide between the North and the South. He was also criticized for not taking action to stop the extension of slavery into the new territories.