The event which started the Gulf War in 1991 was a) the invasion of Kuwait by Iraq. There were the largest amount of coalition forces during this war since World War II, with most of them being from the United States, the United Kingdom, Saudi Arabia and Egypt fighting for Iraq to immediately stop it's invasion and annexation of Kuwait.
        
             
        
        
        
This means to explain the rise of terrorism. They want u to mention 9/11and what the US did in the war of Afghanistan and Iraq
        
             
        
        
        
Answer:
Japanese invasion of manchuria 
Explanation:
 
        
             
        
        
        
C. A depression in the ground caused by the removal of soil or bedrock.