What does voluntary cooperation do ?

Helen is a u.s. citizen and cpa, who moved to london, england three years ago to work for a british company. this year, she spent the entire year in london and earned a salary of $110,000. how much of her salary will she be allowed to exclude from gross income in the u.s.

Which of the following starements is true based on the above information?

Which of the following best completes the diagram above? a. land ordinance b. northwest ordinance c. revolutionary war d. shays' rebellion