Because of unsolved issues. Like establishing colonial empires such as Germany concerned with their land.
Why was Japan stripped of overseas territory and military resources after World War 2?
A. The United States need control of the Japanese economy.
A student can find out about the core skills exemplified by the relationship between cause and effect with an Ishikawa or fishbone diagram which is a visualization diagram tool for deciding on the potential causes of a problem to help identify its root causes.
Louis's Answer: The recession of 2008 impacted the use of energy.
Take care and have a good one
Amendments
Example: the bill of rights