Answer: Global change as a result of war.
Explanation:
In addition to the destruction of biblical proportions, sacrifices, and material damage, World War I brought with it changes globally. As a large number of men were mobilized into the war, women have replaced their role in the industry. This contributed to the emancipation of women. 
There was also a sharp rise in nationalism in the world, as well as the birth of communism. There was also a new world order after the peace in Versailles. America has begun to grow into the most significant power in the world. The worst was Germany.
 
        
             
        
        
        
C) China’s presidents did not have enough power
        
                    
             
        
        
        
May you send a video or a voice recording please ?
        
             
        
        
        
Answer:
is b , because is b , 
Explanation:
if nat d becauste is d ok madafaca
 
        
                    
             
        
        
        
The right answer is iron.
Let me explain: During the Civil War, the Confederacy wanted to acquire modern armored ships, therefore, gaining advantage over their adversaries. Somewhere around 1861, the Confederate Congress purchased ships called 'ironclads' from overseas, and a few moths later, they started working on constructing and converting their wooden ships to ironclads, by coating the sides of their ships with iron.
The goal behind this new defense strategy was to make it more difficult for heavy artillery to pierce the ships, thus gaining a new naval advantage over the enemy.
I hope this answer helps! Have a great week :)