US vs. Nixon was the Supreme Court case that was focused around whether or not Nixon would be forced to release tape recordings and other evidence to federal courts.
In a unanimous decision, the court ruled he must disclose these documents. Essentially, this court ruled that just like other citizens, Nixon is not above the law. When any individual is subpoena for records they must provide them, including the president.
The fact that the imperator spent a lot of resources for wars
The correct answer is false.
It is false that the caliphs declared conquered people had to convert to Islam.
Indeed, under Islam teachings, conversion cannot be forced to anyone. Islam prohibits to impose conversion. The Caliphates respect other people's religions but invited them to convert through missions. Many people accepted to convert to the Muslim religion in the times when conquer and trade spread Islam to North Africa, Asia, and parts of Europe such as the Iberian peninsula.
The factor that contributed to the rise of a welfare state in the United States was because Americans received direct benefits from the federal government during the depression. Welfare is the health, happiness, or fortune of someone or a group of people. The great depression was a time when the stock market crashed and all of the people lost their money, and they didn't know what to do with all the things they have to pay. Because the United States government gave the American citizens benefits during the great depression, the citizens became more happy because they got support from the government during a rough time. The government helped them with living expenses, health, and financial assistance.