The one reason is to limit the power of Federal Government.
This division of authority is referred to as "federalism". The <em>Federal government</em> is very strong, with much power over the states, but at the same time, it is limited to the powers enumerated in the constitution. Powers not delegated to the <em>Federal government</em>, nor prohibited to the <em>States</em> are reserved to the states or to the people.
I believe the answer is: health insurance
Currently, a form of insurance program for all citizens like this has been adopted by almost all countries in western Europe.
Government program like this is usually created by imposing higher tax income and allocate those to the federal budget
Answer:
Treaties keep countries at bay, so to speak, it keeps wars from starting and it states that certain countries are allies.
