1963, King wrote, will long be remembered as a period” that has carved for itself a uniqueness in history”. My question is what ”King wrote” stands for and ”that” in the sentence stands for. Also, does ”long” the sentences stand for being eager? とはどういう意味ですか?

質問を翻訳

I think "King" is the last name of a person. For example, "1963, Smith/Johnson/Tanaka/Yamada wrote, will long be remembered..."

"that" refers to the period of 1963.

"long" refers to 'for a long time.'

If I had to rewrite the sentence to make it easier to understand: "King wrote that the year 1963 will be remembered as a very unique time, many years into the future."