What do you think theis uniqueness of about Japan.?

Manga, anime, food, or safety?

The comma before "or" (aka the oxford comma) is optional but I personally always use it because it does change the meaning of certain sentences.

What’sI think the mobest good thing I thinkthing is stationary.

Japan’s one haves the highest quality of stationary compared to all overf the rest of the world.

ThaIt’s true.

6 European, 8 Arabic, 10 Asian, Canada and United Statd 2 North American countries.

Since you were listing out the places by continents, it'd be more cohesive to refer to Canada and the States by their continent too. If you'd like to specify, you can either put the country names in brackets at the end, or write "2 North American countries, including Canada and the United States."

Back then , there weren’t any digital devices.

Or they may have existed but they were not common.

I used to look around where was afor stationary stores.

But it’sthey were difficult to find.

Even though I found some, but usually the quality wasn’ usually not so good.

To say more specific detailsSpecifically, paper quality, design, and so manythe variety orf paens or pencils were lacking.

The uniqueness of Japan

Note: 日本の良いところ I might say as "what's good about Japan" (although that's not as strong)

What do you think theis uniqueness of(ly good) about Japan.?

Manga, a? Anime, food or? Food? Or maybe safety?

What’sI think the mobest good thing I think isis stationery. / What I like the most about Japan is the stationaery.

"Stationary" with an a is when something isn't moving. Although it took searching it up on Google to notice that there was a difference

Japan’s one havestationery is of the highest quality compare to all overin the world.

That’It's true.!

I have been to many countries when I was young.

Could also be: "When I was young, I travelled the world/went to many countries" or "I have been to many countries in my youth"

6 European, 8 Arabic, 10 Asian, Canada, and the United States.

the comma is optional but it's often useful for clarity

Back then , there weren’t any digital devices.

Or, they may have existed but were not common.

I used to look around where wasfor a stationaery store.

But it’sthey were difficult to find.

Even though I found some, but usually the quality usually wasn’t so good.

To saybe more specific details,, the paper quality, and design, and sos weren't as good, and there weren't as many varietyies orf paens or pencils.

Thus, when I travel to overseas countries, I(’ll) never forget my writing stuff.

What do you think the uniqueness of Japan.makes Japan special?

This is how we would phrase this sentiment

Manga, anime, food or, safety,…?

The “…” are called “ellipses” and show a pause or trail off to denote more options than just what you listed.
I may not have used it technically correct, but it would fit here in conversation.

What’sI think the mobest good thing Iis think ise stationary.

“most good” = “best”
We would almost always say “best” for “most good”

Japan’s one have the highest quality compared to all overnywhere else’s in the world.

ThaIt’s true.!

I htrave been to many countriesled a lot when I was young.

Sounds more natural

6 EuropeanI have been to 6 European countries, 8 Arabic, 10 Asian, Canada, and United States.

Since I took “countries” out of the last sentence, I moved it here to make more sense

Or they may have existed but were not common.

Could also say “Or at least were not common” to sound more natural

I used to look around where was afor stationary store.s.

But it’sthey are difficult to find.

These two phrases should be combined into a sentence with a comma “I used to look around for stationary stores, but they are difficult to find.”

Even though Iwhen I would found some, but usually the quality wasn’t soouldn’t be very good.

To say more specific details,ally, the paper quality, design, and so manyor the variety ories paens or pencils. would be lacking.

Needed a “point” with the sentence. You just listed nouns before

Thus, when I travel to overseas countries, I’ll, I never forget my writing stuff.

What do you think of the Japan's uniqueness of Japan.

Sounds more natural

What’sI think the mobest good thing I thinkthing is stationary.

"most good" = best

Japan’'s onestationaries have the highest quality compare to all over the world.

Back then , there weren’t any digital devices.

Or tThey may have existed, but notit's not very common.

I used to look around whether there was a stationary store.

Even though I found some, but usually the quality usually wasn’t so good.

To saybe more specific, details, paper quality, design, and so manya vast variety orf paens or pencils.

Thus, when I travel to overseas countries (next time), I’ll never forget my writing stuffstationary.

What do you think about the uniqueness of Japan.?

MWhat is the best thing about Japan? Is it the manga, anime, food or safety?

What’sI think the mobest good thing I think is stationaery.

'stationery' is the word for writing materials; 'stationary' is an adjective that means not moving.

Japan’s one haves the highest quality compare to all over thof stationery in the entire world.

I have bewent to many countries when I was young.

6 European, 8 Arabic, 10 Asian,I went to 6 European countries, 8 Arabic countries, 10 Asian countries, and Canada and the United States.

Back then , there weren’t any digital devices.

Or they may have existed but they were not commonplace.

I used to look around where was aalways wanted to go to the stationaery store.

Even thoughwhen I fcound some, but usuallyld find a stationery store, the quality usually wasn’t sovery good.

To say more specific details,here were issues with paper quality, designs, and so manya lack of variety orf pans or pencils.

Thus, when I travel to overseas countries, I’ll never forget my writing stuff.