Although the confederates were outnumbered they continued to win major battles
The Iron Curtain<span> was the name for the boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union to block itself and its satellite states from open contact with the West and its allied states.</span>
All this quote is saying it that the mind does its best work, and functions at the "highest state" of productivity and peace, when it is not "cluttered" with thoughts--when the senses are "stilled".
A, i hope this is right but without the instructions i am just going off of common sense