Answer:
extend
Explanation:
Polk's goal was to spread the United States across the North American continent from the Atlantic Ocean to Pacific Ocean. His goal was to secure the territories of <u>New Mexico </u>and <u>California</u>, which allowed him to extend the United States to the Pacific Ocean. 
 
        
             
        
        
        
If you divide 105 days by 7 that's 15 weeks then you multiply 47 by 15 which is 705 then you multiply 65 by 15 which is 975 then you add 975 to 500 and subtract 705 which will give you 770
        
             
        
        
        
It is <span>D. Blitzkrieg  the guy is correct</span>