Die Geldkassette liegt am Verkaufsstand unter dem Klapptisch.

Because Geldkassette is a feminine noun in German, so its nominative singular article is die.

A few useful points:

• die Geldkassette = the cash box / cash tin
• The grammatical gender has to be learned with the noun.
• In this sentence, die Geldkassette is the subject, so it stays in the nominative case.

You can often think of it as:

• die Geldkassette = subject of the sentence
• liegt = is lying / is located

So die here is not plural; it is feminine singular nominative.

German often uses verbs like liegen, stehen, and hängen where English would simply say is.

Here, liegt literally means lies or is lying, but in natural English it usually just means is located in a lying position.

Common location verbs in German:

• liegen = to lie, be lying
  
  • used for things that are flat, horizontal, or thought of as resting
• stehen = to stand
  
  • used for things that are upright
• hängen = to hang

So:

• Die Geldkassette liegt ... = The cash box is located ...
• German prefers this more specific verb instead of the more general ist.

am is simply the contraction of an dem.

• an + dem = am

This is extremely common in German and is usually the normal form when the article is dem.

So:

• am Verkaufsstand = an dem Verkaufsstand

In English, this is often translated as at the sales stand or by the sales stand, depending on context.

It actually matches perfectly.

Verkaufsstand is a masculine noun:

• der Verkaufsstand

After an, when you are talking about a location rather than movement toward somewhere, German uses the dative case.

For a masculine noun:

• nominative: der Verkaufsstand
• dative: dem Verkaufsstand

So:

• an dem Verkaufsstand
• contracted: am Verkaufsstand

That is why you see am here.

Because unter is a two-way preposition. That means it can take either:

• dative for location
• accusative for movement toward a place

In this sentence, the cash box is already there; there is no movement. So German uses the dative:

• unter dem Klapptisch = under the folding table

Compare:

• Die Geldkassette liegt unter dem Klapptisch.
  = It is under the table. (location → dative)
• Ich lege die Geldkassette unter den Klapptisch.
  = I put the cash box under the table. (movement/direction → accusative)

That location vs. movement contrast is very important in German.

Because both prepositional phrases use the dative case:

• am Verkaufsstand = an dem Verkaufsstand
• unter dem Klapptisch

Both an and unter can take dative when they describe a static location.

So the sentence contains two separate location phrases:

1. am Verkaufsstand
2. unter dem Klapptisch

Each one needs a dative article, and for masculine/neuter singular dative, that article is often dem.

Yes. German very commonly combines nouns into one longer noun.

Here:

• Verkauf = sale / selling
• Stand = stand / stall

Together:

• Verkaufsstand = sales stand / sales booth / stall

Notice the -s- in the middle. This linking sound is common in German compounds, though it is not always predictable.

The main noun is the last part:

• Stand is the head noun
• therefore Verkaufsstand is masculine, because Stand is masculine

That is why the full noun is:

• der Verkaufsstand

Klapptisch is another compound noun:

• klappen = to fold
• Tisch = table

So:

• Klapptisch = folding table

Again, the last part determines the gender:

• der Tisch is masculine
• therefore der Klapptisch is masculine

And after unter with location, it becomes dative:

• unter dem Klapptisch

Yes, they could be swapped. German word order is flexible, especially with adverbial phrases like place expressions.

The sentence as given is perfectly natural:

• Die Geldkassette liegt am Verkaufsstand unter dem Klapptisch.

This presents the location in two layers:

1. am Verkaufsstand
2. unter dem Klapptisch

You could also say:

• Die Geldkassette liegt unter dem Klapptisch am Verkaufsstand.

That would still be grammatical, but the emphasis or flow may feel slightly different.

A useful point for learners:

• German often places the verb in second position in a main clause.
• Here the structure is:
  • Die Geldkassette = position 1
  • liegt = position 2
  • the location phrases come after that

Yes, but mostly in style.

You could say:

• Die Geldkassette befindet sich am Verkaufsstand unter dem Klapptisch.

This means roughly the same thing: The cash box is located at the sales stand under the folding table.

Difference in tone:

• liegt = more everyday and concrete
• befindet sich = more formal, neutral, or descriptive

In ordinary speech, liegt is very natural here because it tells you both where the object is and suggests its physical position.

A simple English-friendly guide:

• Geldkassette ≈ gelt-ka-SET-uh
• Verkaufsstand ≈ fair-KOWFS-shtant
• Klapptisch ≈ KLAP-tish

A few notes:

• w in German sounds like English v
• v in Verkauf- is pronounced like f
• st at the beginning of a syllable is often pronounced sht
• final d in German is often pronounced more like t
• sch sounds like English sh

You do not need perfect pronunciation right away, but it helps to notice these patterns early.

Not in this sentence.

German die can have different functions:

• die = the for feminine singular nominative/accusative
• die = the for plural nominative/accusative
• die = who/which/that as a relative pronoun in some contexts

But here it is clearly the feminine singular article because it goes with the singular noun Geldkassette.

So:

• Die Geldkassette = The cash box

Not:

• They cash box

The noun right after the article makes the function clear.