The correct answers are "a local celebration of Flag Day was approaching" and "it was part of a series on American history".
Step-by-step explanation: The article "Mary Pickersgill, Flagmaker" tells the life of the maker of the Star Spangled Banner Flag, which makes it a relevant topic for the celebration of Flag day, and it is also appropriate for an American history series because it addresses important moments in American history - the Battle of Baltimore in the War of 1812.