Project Background Reign Contract  is a smart contract, having functions like setFees, mint, checkFeeExempt, bonusTime, setFees, swapBack, stake, claim, unstake, setBUSD, etc.  The Reign contract inherits OwnableUpgradeable, ReentrancyGuardUpgradeable,  ERC20Upgradeable, IERC20, SafeMathUpgradeable standard smart contracts from the OpenZeppelin library. And inherits…