Sweet -n- Sour Beef & Vegetables

2 pounds of round steak, cut into 1 inch cubes
2 tablespoons of oil
Two 8 ounce cans of tomato sauce
2 teaspoons of chili powder
2 cups of sliced carrots
2 cups of small white onions
1 teaspoon of paprika
1/4 cup of sugar
1 teaspoon of salt
1/3 cup of vinegar
1/2 cup of light molasses
1 large green pepper, cut into 1 inch pieces