As people moved west the population greatly increased.
        
                    
             
        
        
        
The correct answer of the given question above about the first modern state police agency would be option A. PENNSYLVANNIA. The state that created the first modern state police agency in 1829 is Pennsylvannia. Hope this answer helps. Thank you for posting your question. 
        
             
        
        
        
John W. Mackay and George Hearst had interests in owning mines in common. 
Hope this helps,
Davinia.