What do the terms Europaper and Eurobonds refer to? Why are these instruments important to international banks

Question:

What do the terms Europaper and refer to? Why are these instruments important to international banks and to their customers?

Eurobonds
A Eurobond is a debt instrument that's denominated in a currency other than the home currency of the country or market in which it is issued. Eurobonds are frequently grouped together by the currency in which they are denominated, such as eurodollar...