S1 : American idealism is essentially in a belief in the idea of progress.
S6 : This sence they have inheritedd from the English
P : Therefore, he believes that, because of human effort, th future will be better than the past.
Q : But if American are usually optimistic, they are not wholly unrealstic.
R : The American tends to veiew history as a record of human achievement.
S : They have some common sense practicallity.
The proper squence should be