Detailed Instructions: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Q: Passage: Prussia emerged from the Silesian Wars as a new great power whose continental importance could no longer be disputed, and the leading power of Protestant Germany.:215-219 The kingdom had gained control of extensive new lands in Silesia, a densely industrialized region with a large population and substantial tax yields.:192 Frederick the Great's personal reputation was enormously enhanced by his successes in the wars, as his debts to fortune and to British financial support were soon forgotten, while the memories of his energetic leadership and tactical genius were strenuously kept alive.:90 His small kingdom had defeated the Habsburg Monarchy and defended its prize against Austria, Russia, Sweden, and France, an accomplishment that appeared miraculous to contemporary observers.:200 After 1763, armies around the world sent their officers to Prussia to learn the secrets of the realm's outsize military power, making Prussia one of the most imitated states in Europe.:90.
Question: How many countries did the Hadsburg defend against?
Answer type: Number
A:
4.