The ocean sinks beneath a deep-ocean trench and back into the mantle
in a process known as

What period of history refers to the time when people did not have written records

As you drive in to school, you hear a random radio-show caller arguing that sun exposure really has not been shown to cause skin cancer and that some research suggests that skin cancer is completely genetic and not related to sun exposure at all. at the time, you think that this is a silly argument and that the caller does not know what she is talking about. however, two months later, you are outside without wearing sunscreen, and you find yourself remembering that you had read something about how the sun actually does not cause skin cancer. this process is evidence that has influenced your attitude

This was an act of continental congress which initially organized the first united states territory and was to be the basis for governing how the united states would expand westward.