とあって

「とあって」is used to express the idea that due to being in a particular special circumstance mentioned in the preceding clause, the action or event in the following clause occurs. This is often used in writing or news reports.
Note: Because it refers to a specific situation, the preceding clause of 「とあって」does not go with events that occur regularly. On the other hand, as it refers to events that have already occurred or are happening, the following clause of 「とあって」does not go with expressions of will or speculation about the future such as 「でしょう」「だろう」「かもしれない」...