Такая справедливость помогает людям меньше спорить из-за мелочей.

Because справедливость is the subject of the sentence, so it stays in the nominative case.

• такая = feminine singular nominative
• справедливость = feminine singular nominative

If it were a direct object, then you might see такую справедливость instead.

In Russian, nouns have grammatical gender. Справедливость is feminine because nouns ending in -ость are typically feminine.

So:

• справедливость = feminine noun
• therefore the adjective/pronoun must match it:
  • такая справедливость

This is grammatical gender, not biological gender.

Такая means something like such, this kind of, or that sort of, depending on context.

So такая справедливость is not just justice or fairness in a general sense, but this kind of fairness/justice.

It points back to a type of fairness already being discussed.

The verb помогать requires the dative case for the person being helped.

So:

• люди = nominative plural, people
• людям = dative plural, to people / for people

Russian says literally something like:

• helps to people argue less

That is why людям is correct after помогает.

Помогает is the 3rd person singular present tense of помогать.

Its pattern here is:

• помогать + dative + infinitive

So:

• помогает людям меньше спорить
• literally: helps people to argue less

This is a very common structure in Russian.

Examples:

• Это помогает мне лучше понимать.
• Музыка помогает детям расслабиться.

Because Russian often uses an infinitive after verbs like help, want, can, begin, etc.

Here the infinitive tells us what the fairness helps people do:

• помогает людям меньше спорить
• helps people argue less

So спорить is the action being affected.

Меньше means less.

In this sentence, меньше спорить means:

• to argue less
• to argue less often
• to argue to a lesser extent

It modifies the verb спорить, not a noun.

Compare:

• меньше говорить = speak less
• меньше тратить = spend less
• меньше волноваться = worry less

Because the sentence talks about a general tendency or repeated behavior, not one completed argument.

• спорить = imperfective, to argue / to be arguing / to argue in general
• a perfective form would suggest a single completed instance, which does not fit as well here

Since the idea is that this fairness reduces arguing in general, спорить is the natural choice.

Из-за means because of, due to, or in this context often over.

So:

• спорить из-за мелочей = argue over trifles / argue over small things

This is a common Russian expression for disputes caused by something.

Examples:

• ссориться из-за денег = quarrel over money
• переживать из-за работы = worry because of work

Because из-за requires the genitive case.

The basic noun is:

• мелочь = a small thing, a trifle, something unimportant

Its plural forms include:

• мелочи = nominative plural
• мелочей = genitive plural

So after из-за, you need:

• из-за мелочей

not из-за мелочи or из-за мелочи unless you mean one specific small thing.

No. Мелочь can mean small things in a literal sense, but very often it means trifles, petty matters, or unimportant details.

In this sentence, из-за мелочей means:

• over trivial things
• over petty issues
• over small, unimportant matters

So the idea is not necessarily about tiny physical objects. It is about things that are not important enough to argue about.

The given word order is natural and neutral:

• Такая справедливость помогает людям меньше спорить из-за мелочей.

Russian word order is flexible, so other versions are possible for emphasis, for example:

• Людям такая справедливость помогает меньше спорить из-за мелочей.

That would put more focus on людям.

But the original sentence is the most straightforward, standard order for a neutral statement.

Yes. Both are possible, depending on context.

• justice sounds a bit broader or more formal
• fairness often sounds more natural in everyday English

In Russian, справедливость can cover both ideas. The best translation depends on the situation being described.