Inflation affects most states at the same time, primarily because strong economic ties have developed between them due to the fact that not a single modern state is able to fully ensure the production of all the necessary goods and products for the normal existence and development of its economy. Therefore, a certain specialization has developed in the world depending on climate, soil, natural resources, concentration of production capacities, and so on. Failure in one part of this specialization automatically causes failures in related production and supply. Well, significant cataclysms and phenomena such as the coronavirus pandemic generally hit the economies of many states at once. All this leads to world inflation after some time.
I agree since countries do have financial links in terms of trade and commerce and this would result to an effect to the overall economy of one to other since the specific economic factors that driven the rise of inflation in one country could have a domino effect on the economy of the others. Also, we can never deny that all countries are hit by the pandemic and some economies were hit hard causing some economic issues that is still felt up to this day. It may seem that pandemic is over, but we can still expect to see its effect on each country's economy and how would affect others.
I think as much as it is domino affect, there is also the reason that whatever caused the inflation in one nation, probably caused it in the other as well. Like for example the pandemic was the start of it, and it wasn't just in one nation, it was all over the world and every government had the same reaction to it, which was printing more money.
There was no money in peoples pockets and in order to keep everyone at home they needed to give them some money to keep them staying at home, and that is why I believe that most of them just printed money and gave it to people so they could not work, stay at home, and still survive as well. This resulted with every nation to have a higher inflation, even though it was domino to each other, it was terrible individually for them as well.