Here is a question about this article: The consensus among linguists is that modern, standard Czech originated during the eighteenth century. By then the language had developed a literary tradition, and since then it has changed little; journals from that period have no substantial differences from modern standard Czech, and contemporary Czechs can understand them with little difficulty. Changes include the morphological shift of i to ej and e to i (although e survives for some uses) and the merging of i and the former eji. Sometime before the eighteenth century, the Czech language abandoned a distinction between phonemic /l/ and // which survives in Slovak.
What is the answer to this question: What had Czech developed by the 18th century?
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So... literary tradition

Here is a question about this article: While Mont Blanc was first climbed in 1786, most of the Alpine four-thousanders were climbed during the first half of the 19th century; the ascent of the Matterhorn in 1865 marked the end of the golden age of alpinism. Karl Blodig (18591956) was among the first to successfully climb all the major 4,000 m peaks. He completed his series of ascents in 1911.
What is the answer to this question: When were most of the Alpine fourthousanders climber?
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So... first half of the 19th century

Here is a question about this article: Catalan has an inflectional grammar, with two genders (masculine, feminine), and two numbers (singular, plural). Pronouns are also inflected for case, animacy[citation needed] and politeness, and can be combined in very complex ways. Verbs are split in several paradigms and are inflected for person, number, tense, aspect, mood, and gender. In terms of pronunciation, Catalan has many words ending in a wide variety of consonants and some consonant clusters, in contrast with many other Romance languages.
What is the answer to this question: What style of grammar does Catalan have?
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So...
inflectional