Plz
what were the key arguments of the magna carta
what was the magna cartas effect on future political thought

The 6 key elements of Magna Carta are described according to specific clause. These include the following: 
a. The first clause of Magna Carta guarantees the freedom of the English Church. This implies separation of church and government, so there will be no inclusion of church in politics or vice versa. 
b. Clause 13,  the city of London shall enjoy all its ancient liberties and free customs, both by land and by water. As an example, they have the right to choose its own mayor -- political freedom.
c. Clause 39, established the idea that people could only be judged according to the law, and that even the king himself had to follow the law. It stipulates that a person should be judged by a group of their equals (not by the king or his men). The same concept that someone isn't convicted unless found guilty on the court. 
d. Clause 40: “To no one will we sell, to no one deny or delay right or justice.” It ensures that nobody will be deprived of their rights, or have to pay for their rights, or be made to suffer by waiting for their rights. This should be a constant reminder for politicians or ay government body nowadays as well as for the future.
e. Clause 12, the king could not demand new taxes without first obtaining the approval of the key people in his kingdom. A country can get indecency using this clause, by not being under the control of other countries.  
f. Clause 61, the barons the right form a committee who would monitor the king and take action against him if he failed to honor his agreement to them and to the freemen of his kingdom. This is still existent nowadays as there are different bodies of the government, in which they must go hand in hand to do what is rightful.