urgency(n) the quality,situation,or state of being urgent-very important and needing immediate attention
disintegrate(v) to break apart into many small parts or pieces-often used metaphorically(Example:With the rise of nationalism,the colonial empires began to disintegrate.)
default(v) to fail to do something that legally must be done;especially:to fail to make the payments one must make on a loan,mortgage,etc.-(Note:in this case,the verb is followed by the preposition "on"-Example:She defaulted on her loan payments and lost her car.)