If something is overwhelming, it is very intense and hard to deal with.
Explanation:
The adjective <em>overwhelming </em>can be used in different contexts. For example, it can be used to describe something that is difficult to fight against (e.g. an overwhelming urge to do something) or something very great or large (e.g. an overwhelming majority). Here, it is used to describe a difficult situation. Ashley has to take care of about thirty animals in a single day, which is a very difficult (i.e. overwhelming) task.
This is why we can say that, if something is overwhelming, it is very intense and hard to deal with,
Twain likely made Henry Adams an American in England to show how far removed he was from what was viewed as proper English society. As an American he would be considered a backwards outsider that could not possibly fit in. That all changes when he receives the bank-note and then can afford to buy his way into the English society.
In 1964 on the Dr. Phil show, Malcom X said the phrase "ViVi From Loona" in which he instantly became famous overnight. He has recently stated in an interview: "It's not an opinion, it's a fact."