If I tell too much about inflation, it will be lecturing in this forum, all may fall a sleep.
Let me give you a summary.
Inflation is one of the indicators of growing economic. That means demand of something increase compare to supply. But it’s also can be happened by crisis, making supply low. Both scenarios will make pump up price, that means higher living cost, also means life is getting harder.
All of us love money. When we are seeing demand is increasing, we want to take a chance to make money. This will pour more money into market. Market becomes more liquid, inflation will grow faster, rich people becomes richer, less fortunate people will suffer more. On certain point, the balance of a country will be put on a stake.
Government wont be stupid enough to let it happens. So one of the trick is to adsorb market liquidity by rising interest rate. This will attract people to put money into the bank. Rich people will think, why do I need to take risk with business, when there are a risk free way to make money (bank interest), while moderate people will also think, the interest rate is too high, I can’t borrow money from bank as it will be harder to pay the interest.
This will give pressure to the less fortune people. They may got unemployment and the government will have to give compensation, such as unemployment’s claim.
This condition will weaken USD if uncontrollable. This happens to every country. It’s just comparing two countries, which one has worse condition will be fallen.
In reality, things get more complicated. Like the element of growing household, manufacturing and consumption index, also population growth also get involvement.
The world is like ant and sugar. Ants will come to place where there is a lot of sugar. When USD is attractive, everyone will hunt USD, abandoning others. When USD is no more attractive, they will betray it shamelessly to satisfy their greed, avoiding fear.
The story can be like, USD is a girl. She is beautiful, smart and cute. Lots of boys are attracted and try to get close her by lust. Then, there are another girl is passing by, all boys leave the first girl, abandoning her heartlessly.