The explosion of the Maine in Cuba on February 15, 1898 was ruled by a Naval Court of Inquiry in March of 1898 as caused by a mine explosion. Subsequantly many different views of what caused the explosion have been put forward to a fire in her coal bunkers to a fire in her powder magazines. In 1976 a group of American Naval Investigators concluded that a fire ignited the Maines magazines.
The answer to the question however remains that experts cannot definitively say what the cause of the explosion was.
D) They were aimed at people who were criticizing President Adams' foreign policy.
Adams was criticized for his neutrality in conflicts between Britain and France as well as how he handled the XYZ Affair. The Alien and Sedition Acts were meant to protect the reputation of the federal government and prevent people with extreme views from entering the country.
The Sedition Act allowed for punishment for those that spoke out against the government. Federalists like John Adams believed negative speech about the government showed weakness of the new government to the world. He believed that the US needed to show support of the government. The Alien Act was put into place to limit the rights of new immigrants entering into the US. Adams was fearful that immigrants would introduce extreme ideas coming out of the French Revolution. The Alien and Sedition Acts were met with fierce resistance and criticism. The critics led by Thomas Jefferson would form the Democratic-Republican Party to counter a growing Federalist power.
The people who they call 'muckrakers' tried to help them out, one even made a book about it
b the number of traders and foreigners coming to egypt