Why did germany sign a nonaggression pact with the soviet union in 1939?

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?

Explain urbanization and industrialization enabled the dramatic change in american culture?

Which of the results of cultural blending do you think has the most lasting effects on a country