The covenant : The royal covenant was made with David (2 Sam 7). It promised to establish his dynasty forever while acknowledging that its original royal-covenant promises had been given to the ancestor of the whole nation, Abraham. 
The  significance: 
Covenant, a binding promise of far-reaching importance in the relations between individuals, groups, and nations.
lil extra:
it has social, legal, religious, and other aspects. This discussion is concerned primarily with the term in its special religious sense and especially with its role in Judaism and Christianity.
 
        
             
        
        
        
I would say prospect of jobs or lands
        
             
        
        
        
Answer:
true 
Explanation:
because it is true not false 
 
        
             
        
        
        
Airplanes were vital for ww1 to ease transport of amo and soon guns on the planes including bombs this made it easier for to launch quick air strikes on places like bases vulnerable to air strikes