It was fought by Cuba and Spain. 
        
             
        
        
        
The answer is a patent and is valid for 20 years
        
             
        
        
        
Answer:
Parallel team  
Explanation:
The parallel team is in an organization where it is used the method of solving the problem in the area of development as well as a research field. It can be defined as that there are two parallel teams to find out the solution to a problem. The main purpose of the team is to eliminate the group-think and provide more than one solution to a problem. The result that is provided by both the team is combined. The main flaw of this team is that the higher cost is compared only with one team.