There are two main details that support this opinion. First, digital currencies have a fixed supply. This means that it is a scarce asset, unlike traditional currency which continues to be printed. This scarcity gives it increasing value while traditional currency depreciates in value over time as more gets printed. The second detail is decentralization. Digital currency runs completely decentralized meaning that the only person that is able to use that money is the owner and no one else. Unlike banks which control all of their client's money at all times.
The sentence should be "I had joined the soccer team to meet new friends" if you're looking for a past perfect tense verb, since this is indication it is something that is not repeated.
<h2>B. protecting settlers as they moved westward </h2>
Explanation:
The Buffalo Soldiers' main duty was to support the nation's westward expansion by protecting settlers, building roads and other infrastructure, and guarding the U.S. mail.