During the civil war and the early 1900's immigration became more popular. This is because people of other countries saw that there were people fighting for the rights of slaves as well as they should take advantage of a divided country in order to find a new more economically stable country to live in.
Immigration drastically increased in the United States during the period between the Civil War and the early 1900s. This immigration boom coupled with increased development and industrial output following the Civil War led to large economic growth in the United States as well.
Sally should put her gift into a bank account. Bank accounts are much safer than a random place under your bed or in your shoes. Bank accounts also offer many benefits. (if you would like to learn more let me know thanks, have a great day)