What was Gettysburg address central idea in paragraph 1,2,3?

Technician a says that the sine with dwell (swd) test is used to determine if an electronic stability control system functions normally. technician b says that the esc lamp, called a telltale light, is required to remain on for two minutes. who is correct?

Initialy plantations everywhere growing cotton

Who led the continental army in the final decisive battle of the revolutionary war at yorktown