What was the significance of the 38th parallel before the korean war?

a. when us troops moved north of it, the chinese decided to fight.

b. it was the location of the yalu river boundary between north korea and china.
c. it served as the boundary between north korea and south korea.

d. it marked the first site of the north korean aggression.

folds are formed when heat and pressure is applied to the rock. the higher the temperature, the more pliable rocks become. folds are more likely to occur when the deformation caused by the compression is applied slowly. faults are defined as the displacement of rock that were once connected along a fault line.

explanation: you are welcome mark brainliest i am trying to get tot he next level pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase   pleqase i will freind request and if you mark me : )

an early twentieth-century ad for model home blueprints