Общее собрание уполномочило правление действовать и переизбрало его.

Because the subject, общее собрание (general meeting), is grammatically neuter singular.

In the Russian past tense, the verb agrees with the subject in gender and number:

• masculine: -л
• feminine: -ла
• neuter: -ло
• plural: -ли

So:

• общее собрание уполномочило
• общее собрание переизбрало

Even though a meeting involves many people in real life, the noun собрание is grammatically singular and neuter.

It is in the nominative case, because it is the subject of the sentence.

You can see that:

• общее agrees with собрание
• both are nominative singular neuter

So общее собрание is the thing that performed the actions:

• authorized
• re-elected

Уполномочить means to authorize, to empower, or to give official authority to.

So уполномочило правление действовать means something like:

• authorized the board to act
• empowered the board to take action
• gave the board authority to act

This is a fairly official or administrative word, common in formal statements, meeting minutes, legal language, and organizational documents.

It is in the accusative, but for this noun the accusative looks the same as the nominative.

Правление is:

• neuter
• singular
• inanimate

For most neuter inanimate nouns, nominative = accusative.

So:

• nominative: правление
• accusative: правление

That is why the form does not visibly change, even though its function does.

Here правление means the board, the governing board, or the management committee of an organization.

A very important point for English speakers: although правление refers to a group of people, it is a singular neuter noun in Russian.

So Russian treats it grammatically like it, not they:

• правление действовало
• собрание переизбрало его

This is similar to how English can sometimes treat collective bodies as singular, depending on dialect and style.

Because Russian uses this pattern after уполномочить:

• уполномочить кого-то сделать что-то
• to authorize someone to do something

So in this sentence:

• уполномочило = authorized
• правление = the board
• действовать = to act

Literally: The general meeting authorized the board to act.

The infinitive works just like English to act here.

Because действовать is the normal verb meaning to act, often with a general, ongoing, or unspecific sense.

Here the idea is not to perform one single completed act, but rather to have authority to act in general. That is why the imperfective infinitive is natural.

So the sentence means the board was given the authority to act, not told to carry out one specific completed action.

Его refers to правление.

So:

• Общее собрание = the general meeting
• уполномочило правление действовать = authorized the board to act
• и переизбрало его = and re-elected it

In English we would usually say re-elected the board rather than re-elected it, but Russian often uses a pronoun to avoid repetition.

Even though правление is neuter, the accusative form of the pronoun is still его. That same form is used for:

• masculine singular animate/inanimate in some contexts
• neuter singular

So you have to identify the referent from context.

Grammatically, a learner might wonder about that, but in normal interpretation, no.

Here is why:

1. The subject is общее собрание.
2. The previous object is правление.
3. Semantically, re-electing the board makes sense, while re-electing the meeting does not.

So the meaning clearly points to правление.

In real Russian, pronoun reference is often resolved by meaning as much as by grammar.

Переизбрать means to re-elect.

The prefix пере- here gives the sense of again or anew:

• избрать = elect
• переизбрать = re-elect

So переизбрало его means the board was elected again for another term.

Also, переизбрало is perfective, so it presents the re-election as a completed event.

Because и is simply joining two verbs with the same subject:

• уполномочило
• переизбрало

This is a normal compound predicate structure:

• Общее собрание уполномочило ... и переизбрало ...

No comma is needed because these are two coordinated actions of the same subject, not two separate clauses requiring a pause.

Yes, this word order is natural, especially in formal or administrative Russian.

The sentence presents the actions in sequence:

1. the meeting authorized the board to act
2. and re-elected it

Russian word order is flexible, so other orders are possible for emphasis, but this version sounds neutral and official.

For example, you could rearrange parts for emphasis, but the original is the most straightforward for a formal record or summary.