The answer is d. the stock market
Explanation:
World War 1 ended after the signing of Treaty of Versailles between Germany and other countries in war.
In the treaty, Germany was made responsible for starting World War I, it said that since Germany couldn’t settle its issues so it had ignited WW1.
Other than this humiliation, the treaty also imposed heavy sanctions on Germany, it had to lose some territory also and it led to economic suffering in the country.
All these factors gave air to the nationalist party Nazi, that was led by Hitler and his party gained confidence of the locals also
The United States had as its first reaction the freezing of the accounts of the Japanese in America, the suspension of commercial activities and the shipment of supplies, as England did, this would block the entry of money and oil from abroad and economically suffocate the empire of Japan that would scarcely have 3 years of supply, if it did not enter into war, this infuriated the Japanese who would then attack Pearl Harbor and cause the sending of American troops to South Vietnam, participating in a war, that at first, it didn´t correspond to them.
Yes, everyone lost their money when the stock market crashed.