Complex sentence: German, Russian, French, and Spanish, for instance, are popular languages in scholarship; the disproportionate online emphasis on English could shape access to historical scholarship, and, ultimately, the growth and direction of future scholarship.
Split into simpler sentences: German, Russian, French, and Spanish, for instance, are popular languages in scholarship. The disproportionate online emphasis on English, however, could shape access to historical scholarship, and, ultimately, the growth and direction of future scholarship.