I think the answer is Urban Sprawl, because when that happens, trees are cut down to make room for cities/towns, and when trees are cut down there is less of a chance for wildfires.
        
                    
             
        
        
        
Fighting began between proslavery and antislavery forces
        
             
        
        
        
17 d because laissez faire is no or very little govt regulation in the economy and business 18 not sure I would go with a or d