What question are u asking like I need more details
The values of making a sacrifice shows that you are selfless and will put others before yourself.
Answer:
In a time before there was money people would use the barter system to exchange goods, for example of you where a rice farmer you would trade rice for things you needed. Unfortunately sometimes the people who had what you need would not need what you have.
Explanation:
Simply put, credentials are college degrees, apprenticeships, certifications or licenses that give you credibility in your work field. They show your employer and your customers that you have the knowledge and skills to perform your professional function.