what's the difference between vulcans and romulans
The Romulans also act as a counterpoint to the logical Vulcan race, whom they resemble and with whom they share a common ancestry. As such, the Romulans are characterized as passionate, cunning, and opportunistic -- in every way the opposite of the logical and "cold" Vulcans. The Romulans are the dominant race of the Romulan Star Empire. Although Star Trek Star Charts place the Romulan Empire's territory in the Beta Quadrant of the galaxy in Star Trek: Deep Space Nine, they are referred to as an Alpha Quadrant power.