In order for a bill to become law at the federal level, which of these must occur?

If a bill has been passed in both the house and the senate, it is then sent to the president for signature. The president have the  veto power, he can veto  the bill if he considers it to be unwise, If the congress is in session then the bill automatically becomes the law after ten days. If the president takes no action then pocket veto occurs and if the congress has adjourned its session then the bill dies without becoming a law. If the president signs the bill, then it becomes a law.

mass production/ assembly line production

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation: