Complex sentence: The Walker trade to Minnesota never lived up to expectations and this allowed the Dallas Cowboys to use two draft picks (Emmitt Smith and Darren Woodson) to become a dominant team that won three Super Bowls in the 1990s.
Split into simpler sentences: The Walker trade to Minnesota never lived up to expectations. This allowed the Dallas Cowboys to use several draft picks to become a dominant team that won three Super Bowls in the 1990s.