Strategia este simplă.

Because Romanian usually puts the definite article at the end of the noun instead of using a separate word like English the.

• strategie = strategy
• strategia = the strategy

So strategia is the definite form of strategie.

The base form is strategie.

You would normally find it in a dictionary as:

• strategie = strategy

Then Romanian can change it depending on whether it is definite or indefinite:

• o strategie = a strategy
• strategia = the strategy

Este means is. It is the 3rd person singular present form of the verb a fi = to be.

So:

• eu sunt = I am
• tu ești = you are
• el/ea este = he/she is

In this sentence, strategia is singular, so este is the correct form.

Yes. E is a very common short form of este.

So both are correct:

• Strategia este simplă.
• Strategia e simplă.

The version with este sounds a bit fuller or slightly more formal/neutral. The version with e is very common in everyday speech.

Because Romanian adjectives must agree with the noun in gender and number.

Strategie is a feminine singular noun, so the adjective must also be feminine singular:

• masculine/neuter singular: simplu
• feminine singular: simplă
• plural: simpli / simple, depending on gender

So:

• strategia = feminine singular
• simplă = feminine singular

They match.

You can tell from the forms used with it:

• o strategie → the article o is feminine singular
• strategia → the definite ending matches a feminine noun
• simplă → the adjective is feminine singular

So the sentence itself gives you several clues that strategie is feminine.

Because simplă is not directly describing the noun inside a noun phrase like a simple strategy. It is part of the predicate: the strategy is simple.

This is the structure:

• Strategia = subject
• este = verb
• simplă = predicate adjective

So the adjective comes after the verb, just as in English:

• The strategy is simple.

If you wanted the simple strategy, that would be a different structure:

• strategia simplă

In standard Romanian, you should normally keep the verb:

• Strategia este simplă.
• Strategia e simplă.

Learners should not usually omit it. Romanian is not like some languages where is can regularly disappear in normal present-tense sentences.

The letter ă is a very common Romanian vowel. It sounds like a short, relaxed vowel, somewhat similar to the a in English sofa.

So simplă ends with that sound:

• sim-plă

It is not pronounced like English a in late or cat.

No, this is the normal and natural word order.

It follows a basic pattern:

• Subject + verb + adjective

So:

• Strategia = subject
• este = verb
• simplă = adjective

This is the most neutral way to say it. Other word orders are possible for emphasis, but this one is the standard choice for learners.

Because Romanian usually uses an attached definite article instead of a separate word.

English:

• the strategy

Romanian:

• strategia

So the idea of the is already built into strategia itself.

It is an adjective.

More specifically, in this sentence it is a predicate adjective, because it comes after este and tells you a quality of the subject:

• Strategia → what we are talking about
• este simplă → what it is like

So simplă describes the subject, but through the verb to be.