context: Oberg continued to spend much of his time in the United States, teaching in university systems in both Missouri and Montana, and became a U.S. citizen in 1944.
source: Along with teaching in the United States, Oberg spent time both as a student and teacher in foreign countries.
reference_original: Помимо преподавания в Соединенных Штатах, Оберг учился и преподавал в зарубежных странах.
reference_flipped: Помимо преподавания в Соединенных Штатах, Оберг училась и преподавала в зарубежных странах.