Föreningen samlade in en miljon kronor.

The basic word is förening. Swedish usually makes nouns definite by adding an ending, instead of putting a separate word like the in front.

So:

• förening = association, society, club
• föreningen = the association

Because förening is an en-word, its definite singular ending is -en.

Not always exactly. Förening is a broad word and can mean an association, society, club, or organized group. Very often it refers to a membership-based organization, and it does not automatically mean a business company.

So depending on context, English might use association, society, club, or organization.

Yes. The verb is samla in the infinitive, and samlade is the past tense.

A few useful forms are:

• samla = to collect / gather
• samlar = collects / is collecting
• samlade = collected
• samlat = collected

In this sentence, the full verb expression is samla in, so samlade in means collected or raised.

Because samla in is a particle verb, similar to an English phrasal verb like bring in or hand in.

The dictionary form is:

• samla in

But in a normal main clause, Swedish separates the finite verb from the particle:

• Föreningen samlade in en miljon kronor.

So in is an important part of the verb, even though it is written separately here.

Usually not if you want this exact meaning.

samla in is the normal expression for collecting or raising money.
samla by itself is more general and often means gather or collect things in a broader sense, such as collecting stamps or gathering people together.

So for money, donations, or fundraising, samla in is the natural choice.

Because miljon is an en-word in Swedish.

So you say:

• en miljon
• den miljonen
• två miljoner

This is something you simply have to learn with the noun: miljon has common gender, not neuter gender.

Because the amount is more than one.

• en krona = one krona
• två kronor = two kronor
• en miljon kronor = one million kronor

After numbers and amount expressions, Swedish normally uses the plural form when the quantity is greater than one. Here, the head amount is en miljon, so kronor must be plural.

Because after numbers, Swedish normally uses the noun without en, ett, or a definite ending.

So Swedish says:

• en miljon kronor
• hundra kronor
• tre bilar

not an extra article before the plural noun.

This is similar to English, where we say one million kronor, not one million the kronor or one million a kronor.

In a yes/no question, the finite verb comes first:

• Samlade föreningen in en miljon kronor?

With inte in a main clause, inte comes after the finite verb:

• Föreningen samlade inte in en miljon kronor.

So the particle in stays with the verb phrase, but inte goes between the finite verb and the particle.

The pattern is:

• subject + finite verb + particle + object

So here:

• Föreningen = subject
• samlade = finite verb
• in = particle
• en miljon kronor = object

That word order is very common with Swedish particle verbs in main clauses.