You do not need the space after the apostrophe (this ' thing) - "hors d'oeuvres".
This is the correct spelling of "space", both the interplanetary version and the "closet space" usage.
If you mean in a sentence such as, "I believe that the new hours will work best for both the store and its patrons", then no a comma is not needed.
Yes. Commas are a feature of sentence structure, not of words. There is no word or phrase in English that requires a comma. Whether a comma should go after the word "both" depends on the rest of the sentence.
Yes, they can. You can also play another field spell to remove the one that is currently in effect.
No.
A comma is generally used before "which" in non-restrictive clauses, but not when it introduces a restrictive clause. As for dates, it is common to include a comma after the year when it is followed by additional information in a sentence.
If Inc. is an abbreviation, then it should be followed by a full stop, If Inc. falls as part of a sentence then both a full stop and a comma is required.
noooooooooooooooooo actually, there is a specific comma rule that pertains to this - A comma would be used both before and after the designations of "Jr." or "Sr.," as long as the sentence continues. If the designation is at the end of the sentence, then a comma is used only before it.
A comma before "and" depends on the specific context. In a series of items, some style guides recommend using a comma before "and" (the Oxford comma) for clarity, while others omit it. In other cases, such as coordinating conjunctions joining independent clauses, a comma before "and" is typically used.
this is how he either stare at u or you both have something in comma
Both can be used it depends on what you have written.
The comma is optional, but should be used if one or both of the clauses is long.