Add the ground beef and cook, stirring occasionally, until the beef is cooked through, about 5 minutes.
Add the chili powder, cumin, garlic powder, onion powder, smoked paprika, black pepper, salt, and cayenne pepper. Stir to combine and cook for another minute.
Place the taco shells on a plate or baking sheet and warm them in the oven at 300°F for 5 minutes.
In a small bowl, combine the mango, red onion, cilantro, lime juice, and salt. Stir to combine.
To assemble the tacos, divide the beef mixture among the taco shells. Top with the mango salsa and serve.
Interesting Facts
Street tacos originated in Mexico and are traditionally made with corn tortillas.
Mangos are native to India and Southeast Asia and have been cultivated for over 4,000 years.
Cilantro is a member of the parsley family and is used in many Mexican dishes.