hi! This orthography question may be more a job for /r/linguistics, but related questions have been asked here; here are responses so far:

When did writers of English stop capitalizing all their nouns? And why?

Why were words capitalized in the middle of sentences in various 18th century US documents, such as the Declaration of Independence, and why did 19th century documents put periods in titles?

Why did Enlightenment- and Victorian-era writers capitalize words in a seemingly arbitrary manner?