如果有一个强大的中央银行，其管理层坚持谨慎地发行银行券，那么防止银行券的迅速膨胀则是可能的。

It is possible that a strong central bank with a management devoted to conservative note-issuing practices could have prevented the rapid note expansion.

而随着英格兰银行的建立，银行券成为英国货币的重要组成部分。

And along with the establishment of bank of England, bank notes became an important part of money.

通常在这些州法律允许任何人设立银行，前提是银行券的发行要有证券支持，证券由州银行主管部门保管。

Typically these laws allowed anyone to set up a bank, provided the issue of notes was backed with securities kept on deposit with the state banking authority.