Here you go!
1) Checks and Balances- This idea is implemented in the Constitution to ensure that no one branch of the federal government gains too much power. For example, the legislative branch(Congress) can approve a bill that will then be sent to the executive branch (President). If the president does not like the bill or thinks that it violates the rights of citizens, he/she can veto the bill. Vetoing the bill stops the bill from becoming a law. This check on power ensures that Congress makes laws that do not violate the rights of citizens.
2) Anti-Federalists do not want to ratify the Constitution unless it includes a Bill of Rights. The Anti-Federalists are worried that the Constitution gives too much power to the federal government. Having a strong central government caused problems when the US was still part of Great Britain. This is why the Anti-federalists are fearful of this type of system.
3) Federalists want a new constitution passed because it will fix America's weak political structure. Before the US Constitution is implemented, the constitution being used is known as the Articles of Confederation. This constitution has an extremely weak central government, allowing for disunity among the states.
Why did historians choose to study this topic the correct answer is b
What I can understand from your question, rational use suggest that you use things in a rational way or in a logical,astute,prudent way. This means, for example, you are lost in an island and you know someone is going to look for you in the following 10 days, still you dont know in which day you are going to be rescued. Because you are an inteligent human being you will decide to use your things in a rational way as if you dont do it you will have a shortage of supplies and most probably you are going to die.
-Hope this works...
