Because not everybody speaks English.
There are many different languages. That's why. And not everyone has to use English. The Japanese symbols (kanji and kana) are believed to have been originally imported from old Chinese.
Chinese music is based on a pentatonic scale, which means that there are only 5 notes. if you take a xylophone and take out all the E's and B's(or is it F's..im not sure), no matter if you improvise or not it will become a Chinese tune.
so that we can identifythem
Depending on what you mean it could differ. スレイヤー /su rei ya/ is a Japanese term inserted from English which can be used generally, i.e. as a proper noun or just a noun meaning killer etc.
The Egyptians wrote in hieroglyphs. These look like little pictures or symbols. It took historians a long time to be able to read it.
heheueuheuhe
Sumerians used wedge shaped symbols called cuneiform. The symbols represented words.
how did Manteo and Wanchese differ in their views of the English settlers
The universal language is English. Your question is too vague since the official languages differ by countries or places. Examples of which are Tagalog in Philippines and Japanese/Nihonggo in Japan.
differ proper names from things named after proper names
Clearly, not at all.
Japanese food uses different spices as Chinese food, such as wasabi and pickled ginger.
Abigail's letters to John differ from other primary sources in the late 18th century because they discuss the Continental Congress.