When writing twentieth century using an ordinal numeral, should the th part be in superscript? 20th century 20th century

Which is correct in the following sentence, century or centuries? [. . .] courtship gifts common in Sweden and other Scandinavian countries between the 17ᵗʰ and early 20ᵗʰ century.

Even worse, "...during the later part of the 20th century" allows even more ambiguity, essentially meaning nothing, and readers will inevitably misread it as 'latter'.

May 18, 2019 · I suspect it was a term coined sometime during the 20th century to mean the turn of the 19th and 20th centuries. As someone born mid-twentieth, it seems always to have been …

Feb 15, 2017 · century | 1 The 1900s are the 20th century AD, of which the last year will be the year 2000. Similarly the period 1801 – 1900 inclusive was the 19th century, 1301 – 1400 was …

Apr 17, 2017 · The words "nineteen-hundreds" to me mean strictly 1900–1909. I've noticed several times that people, invariably North American, use these words to mean "the twentieth …

The use of initialisms along with other types of abbreviations is obviously quite old, due to limited space. But coining new words by acronym construction seems very much a 20th-century …

Feb 15, 2023 · I’m working on translation of an American novel, dating back to the late 19th - early 20th centuries, and the main character came from a local little Vermont town. The author …

Aug 23, 2014 · Our numbers have a specific two-letter combination that tells us how the number sounds. For example 9th 3rd 301st What do we call these special sounds?

Jan 26, 2020 · I have noticed that sometimes we write ordinal numbers with the "th" a little higher than the numbers. But sometimes I see it just attached to it. Which one is correct?