この質問は過去に何度か出されており、多くの方の興味を弾くテーマなのだと

この質問は過去に何度か出されており、
多くの方の興味を弾くテーマなのだということが
わかります。

こんにちは が歴史的には正しいです。
「今日は、お日柄もよろしく・・・（例）」などの
挨拶文の最初の部分だけが残った挨拶語ですから。

しかし、助詞の wa は「は」 と表記する約束に
なっているだけで、
助詞という印象の薄れてしまった挨拶語として
「こんにちわ」 と書いても
それはむしろ発音的には正しいということになります。

それで現在では両方の表記があるのでしょう。

尚、♯5さんの回答には誤解があるようです。
「ｈａ」の音は初期の日本語には存在せず、
「は」と書いて「ｐａ」と発音していました。
次に平安時代に「ｆａ」になり、
今では「は」は「ｈａ」なんです。
助詞のｗａ を「は」 と書く、
助詞のｅ を「へ」で書く、
これは表記上の約束事です。
発音の変遷とは別テーマです。

>最近では、「お」と「を」について、
>前者を「Ｏ」、後者を「ｗｏ」と発音する人が増えてきて

これもちょっとした誤解でしょう。
歴史的に「を」は長い間 ｗｏ と発音されてきましたが
大正時代ごろからどちらもｏになる傾向です。
地域的に・年代的に
をｗｏ と おｏ を区別して発音する人は
いまもいらっしゃいます。
歌手などは、歌の意味をはっきりさせるために
きちんと弁別して発音するので
そうしたアーティストの影響をうけた若い方が
をｗｏ と おｏ を区別するようになっています。

Результаты (английский) 1:

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Результаты (английский) 2:

This question has been issued several times in the past,
is that he theme of to play the interest of many people
you will find. Hello is correct historically. "Today, our coal tit also regards ... (for example)", such as because it is the first part only remained greeting words of greeting. However, wa of the particle is to promise to be referred to as "the" only have become, as a greeting word had faded of the impression that the particle even says "Hello," it will be to the fact that correct rather phonetic . So Will there is a representation of both the current. It should be noted, seems to ♯5's answer there is a misunderstanding. The sound of "ha" is not present in the early Japanese, it had been pronounced "ha" and write a "pa". Next is "fa" in the Heian period, and now "is" is what "ha". The wa of particle written as "wa", write the e of the particle in the "to", this is a convention on the notation. The transition of the pronunciation is another theme. > In recent years, the "Contact" and "wo", > "O" the former, the latter becoming increasingly pronounce people as "wo" This would also be a little misunderstanding. Historically, but "wo" has been pronounced long wo is a tendency to both o from around the Taisho era. The geographically-chronologically Could people are to distinguish wo and your o is reported comes even now. Such as a singer, in order to clarify the meaning of the song because the pronunciation and discrimination neatly younger affected by these artists has become so as to distinguish between the wo and your o a.

Результаты (английский) 3:

This question many times in the past, and to the interests of many people play the theme that you will find it. Well Hello historically correct. Today, the day
「 hello (example), only the first part of the greeting sentence left greeting words. But the particles "WA" referred to in that promise, but only at the
「 hello "as I write a word of greeting the impression that large particlesIt is more pronounced in the right. So now we too would be both. Well, No. 5, the answer seems to be a misunderstanding. The sound of
「 ha "was pronounced" pa "and" does not exist in the early days of the Japanese 、
「. "Fa" is now at the Heian period, now in the "" "" ha. At the "particles" WA "particles" they write e they write this notational conventions. And the development of the theme. TooRecently, the "" and "" "", the former 、
> O increasing "Wo" and the latter one to this too would be a bit of a misunderstanding. In the "history" for a long time and tend to pronounce Wo both o from the Taisho Period was at that. In the regional and age at which people wo to pronounce o from you now. The singer is so neat, such as discrimination in order to clarify the meaning of the songYou have to distinguish between the effects of the artist, with young and I / O.