Answer: B
Explanation:
Because I submitted it and I got it right my guy
These countries differ in many ways: linguistically speaking, Poland an Serbia, which are slavic, do not share the same origins with Hungary, which is not an Indo-European language. Secondly, Poland and Hungary are countries which did not separate themselves, nor socially, nor geographically after 1989 when communism ceased to exist as Serbia used to belong to a bigger country, Yugoslavia, in the past.
The event of the stock market crash put the entire nation into "The Great Depression", which made the economy plummet. Trade world-wide was effected, and people were scared to put, and trust their money to be kept in banks. So as an alternative, they'd stuff their cash in their homes, wherever they could hide it.