Slow Cooker Pulled Pork Sandwiches

For the pork:

• 3 lbs boneless pork country ribs or pork shoulder roast cut into large chunks
• 1 teaspoon onion powder
• 1 teaspoon garlic powder
• 2 teaspoons smoked paprika
• 1 tablespoon brown sugar
• 1 teaspoon cumin
• 1 1/2 teaspoons salt
• 1/2 teaspoon pepper
• 1 cup chicken broth
• 1 1/2 cups barbecue sauce

For the slaw:

• 2 cups green cabbage shredded
• 2 cups purple cabbage shredded
• 1 cup shredded carrots
• 1/2 cup chopped cilantro
• 3 tablespoons lime juice
• 1 tablespoon white wine vinegar
• 2 tablespoons white sugar
• 1/4 cup olive oil
• salt and pepper
• Buns for serving