Based on the clue 'as a noun these can be jumps or limits youd best n...', what is the answer?

Based on the clue 'as a noun its the opening of a volcano in the eart...', what is the answer? Based on the clue 'as a noun its the person who is in charge of the m...', what is the answer? Based on the clue 'as a noun its the rear portion of an aircraft as a...', what is the answer? Based on the clue 'as a noun its the top layer of the earths surface ...', what is the answer? What is associated with: as a nyc lawyer in the 1780s hamilton lived on this street associated with the stock market? What is associated with: as a part of its 19th century territorial expansions this nation colonized the nigerian port o… Based on the clue 'as a part of the highland games this long wooden p...', what is the answer? Based on the clue 'as a partner in a law firm in arkansas she earned ...', what is the answer?