Complex sentence: Popov has generally been recognized in Eastern Europe as an "inventor of radio", in contrast to the West's recognition of Nikola Tesla and, historically, Guglielmo Marconi.
Split into simpler sentences: Popov has generally been recognized in Eastern Europe as an "inventor of radio". Popov is still recognized in the Eastern European countries in contrast to the West's recognition of Nikola Tesla and, historically, Guglielmo Marconi.