The foundation of the modern consonant system has existed for centuries. At what era might this phenomenon be seen earliest?

In the age of old English, odd words such as "sceal" and "heardra" are common. What is the meaning of these words in modern English?

Seven centuries ago, the English language has consonants which contributed to a sub category of consonant; what are the name of the sub categories which the modern English language has lost? (more than one answer)

"whan that aprille with hise shoures soothe" and "Tis not enough no harshness gives offence" from what period do these 2 sentences came from? (more than one answer)

What eventually makes English more consistent and stops people from regularly inventing new words?

British English is getting overtaken by American English

The pronunciation of places in English are changing over time, on what base do people make this change of?

The word “handkerchief” is spelled /ˈhæŋkətʃiːf/, but historically, this word used to have a different pronunciation; how was this word pronounced in the past?

Words such as make-up, breakdown, hold-up, and lock-out have the stress pattern of IES, but this was after they underwent a change; how was make-up pronounced in the past?