How did the north star help sailors?

The North Star, or Polaris, has been a crucial navigational aid for sailors due to its position nearly directly above the North Pole. It remains relatively fixed in the night sky, allowing sailors to determine true north and establish their latitude. By measuring the angle of the North Star above the horizon, mariners could accurately plot their position and navigate across open waters, especially during long voyages. Its reliability made it a vital tool for exploration and maritime trade.