Complex sentence: In Paris he attended journalism school and joined the conservative newspaper "Dagens Nyheder" (which had just merged with "Nationaltidende") in 1931, however, he still considered and weighted the options of starting a career in literature studies.
Split into simpler sentences: In Paris he attended journalism school and joined the conservative newspaper "Dagens Nyheder" (which had just merged with "Nationaltidende"). In 1931, he considered and weighted the options of starting a career in literature studies.