a - 4
b - 2
c --3
d - 1
Explanation:
<u>The 12th Amendment made a foundation change</u> in the process of the elections of the President and Vice President to make it more democratic and to have more people have a say in it.
T<u>he 20th amendment finalized the term dates</u> of Presidents and their cabinets and had laws for when there was no clear winner at the ballot.
<u>The 23rd amendment happened due to common demand</u> and allowed DC voters on the poll
<u>The 25th amendment came out of the tragic necessity </u>after John F Kennedy's assassination.
Answer:
creating a unified court system 'common' to the country through incorporating and elevating local custom to the national level, ending local control,
Government powers not provided to the national government in the us constitution but are rather given to the states by the 10th amendment are called <em>reserved powers</em>. :)