Context: Literary Catalan allows the use of words from different dialects, except those of very restricted use. However, from the 19th century onwards, there is a tendency of favoring words of Northern dialects in detriment of others, even though nowadays there is a greater freedom of choice.

Question: What can use words from different dialects?
Answer: Literary Catalan

Question: What kind of words are excepted from literary use?
Answer: restricted use

Question: When did the preference of use of words from northern dialects begin?
Answer: 19th century

Question: What affect did this favoring of northern dialects have on other dialects?
Answer: detriment of others

Question: What kind of choice is now available in word choice?
Answer: greater freedom of choice