Answer:
"Unfortunately, when the government clerks had panicked and dashed from Philadelphia, they had abandoned all papers and records in boarded-up houses."
Explanation:
According to the passage from The American Plague, it is narrated that Washington was a stickler for orderliness especially for his official files which he liked to get a hold of at a moment's notice.
He was left frustrated however, when government clerks abandoned the papers in boarded up houses.
The line from the passage can be defined as the cause is "Unfortunately, when the government clerks had panicked and dashed from Philadelphia, they had abandoned all papers and records in boarded-up houses."
