Outline:

I. Introduction

A. Background information on the Brazilian game "Jogo do Bicho"

B. Importance of the number "21" in the game

II. The Origin and History of "Jogo do Bicho"

A. How "Jogo do Bicho" started in Rio de Janeiro, Brazil

B. The creation and significance of the number "21" in the game

III. Rules and Gameplay of "Jogo do Bicho"

A. Explanation of the different animal symbols and their associated numbers

B. How players choose their numbers and place bets

C. Determining the winning number based on daily lottery draws

IV. Controversies and Legal Issues Surrounding "Jogo do Bicho"

A. The game's association with organized crime

B. The ambiguous legal status of "Jogo do Bicho" in Brazil

V. Economic and Social Impact of "Jogo do Bicho"

A. The financial influence of the game on local communities

B. The cultural significance and popularity of "Jogo do Bicho"

VI. Conclusion

A. Recap of the historical significance and rules of "Jogo do Bicho"

B. Acknowledgment of the impact and controversies surrounding the game.