Answer:
 have fallen by more than one-half.
Explanation:
Thick, noticeable smog in many of the cities and manufacturing centers of the United States helped bring the 1970 e Clean Air Act to spur passage at the height of the national environmental movement. The ensuing modifications were intended to enhance its effectiveness and address newly recognized problems of air pollution such as acid rain and stratospheric ozone layer damage. The Clean Air Act allows EPA to set national environmental air quality levels for certain specific and prevalent contaminants, based on the latest research, to protect public health and welfare nationally. Certain main regulations are intended to reduce the rise in emissions from increasing motor vehicle numbers and new manufacturing plants.
 
        
             
        
        
        
The battle Includes Both US Army and navy.
 <u>Explanation: </u>
- That Battle was possibly due to the use of SIGINT that means Signal inteligence by American forces, they discovered the Japanese navy using CXAM radiolocation. This action of navy force flotillas was fought principally by air from aircraft vehicles.
- The American foremost plan to attack Japan was to island-hop around Japan, not to hit their country undeviatingly yet to get over all the islands around it and encircle them and probably kill them to quit.
-  It was led by General MacArthur and including Admiral Chester Nimitz.             
 
        
             
        
        
        
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Answer:
Yes, I agree with the argument of Sintoni's about the Vietnam war. 
Explanation:
"Vietnam is a test of the American Spirit", these were the lines written by Sintoni in his last letter to his wife. Every war will be fought with not only weapons but also with the help of spirit. Spirit means courage, if you have a courage no one can defeat you in any war but if you have no courage you will lose the war even with advance weapons. So if the American has that spirit, we will win this war. 
 
        
             
        
        
        
Answer: Nations of Latin America won independence
Explanation:
As Creoles and Mestizos became discontented with Spanish rule, they began to demand more self-governance from the Spanish which would eventually boil over to them asking for independence. 
This was made easier when Napoleon invaded Spain during the Napoleonic wars and severely weakened Spain's power to hold onto its colonies. Revolutions in North America such as the American Revolution spurred some colonies to seek independence such as Haiti from France which went through its own Revolution as well. 
These three factors allowed nations in Latin America to seek their independence and led to many getting it.