Elizabeth Muriel Gregory "Elsie" MacGill, OC (March 27, 1905 – November 4, 1980), known as the "Queen of the Hurricanes", was the world's first woman to earn an aeronautical engineering degree and was the first woman in Canada to receive a bachelor's degree in electrical engineering.
 She worked as an aeronautical engineer during the Second World War and did much to make Canada a powerhouse of aircraft construction during her years at Canadian Car and Foundry (CC&F) in Fort William, Ontario.
 After her work at CC&F she ran a successful consulting business.
 Between 1967–1970 she was a commissioner on the "Royal Commission on the Status of Women in Canada", published in 1970.
The Maple Leaf Trainer II was a Canadian biplane trainer designed by Elsie MacGill in 1938 and manufactured by the Canadian Car and Foundry.
 Although it was intended for use as a basic trainer for the Royal Canadian Air Force, it was rejected and the only two completed airframes were sold to Mexico.
The BFW M.21 was a single-engined biplane trainer designed by Willy Messerschmitt for the German Ministry of Transport.
 It was one of only two biplanes Messerschmitt designed, neither reaching production.
The Huff-Daland TA-2 was an American biplane trainer designed by the Huff-Daland Aero Corporation in the early 1920s for the United States Army Air Service.
 It was a development of the Huff-Daland HD.4 Bridget with a 140 hp ABC Wasp radial engine.
 Three prototypes (one for static tests and two fliers) were ordered for evaluation at McCook Field.
 The two flying examples were later rebuilt with a re-designed fuselage, balanced rudder, smaller wings and a 90 hp Curtiss OX-5 engine.
 One aircraft was later re-engined with a Lawrance J-1 radial engine.
Maple leaf cream cookies (also called "maple leaf creme cookies", "maple leaf cookies", "maple creme cookies", "maple leaf cremes", and "maple cremes") are a Canadian sandwich cookie.
The PWS-16 was a biplane trainer designed and developed by Podlaska Wytwórnia Samolotów (PWS).
 An armed variant also entered production as the PWS-26
The Breda Ba.25 was an Italian two-seat biplane trainer designed and built by the Breda company.
 It was the most widely used Italian basic trainer of the 1930s.
The PWS-12 was a biplane trainer designed and developed by Podlaska Wytwórnia Samolotów (PWS).
 It entered production as the PWS-14.
The Huff-Daland Type XV Training Water-Cooled TW-5 was a biplane trainer designed by the Huff-Daland Aero Corporation in the early 1920s for the United States Army Air Service.
The Renard R.34 was a 1930s Belgian two-seat biplane trainer designed by Alfred Renard and built by Societé Anonyme des Avions et Moteurs Renard.

Question: The Maple Leaf Trainer II was a Canadian biplane trainer designed by the world's first woman to earn a what?
Answer: aeronautical engineering degree