Learn Spanish (Latin America): Soy muy torpe y he roto el vaso. - I am very clumsy and I have broken the glass.

Roto is the irregular past participle of romper (to break). Just like in English where we say broken instead of breaked, Spanish has irregular forms you have to memorize. You use it with he (I have) to make the present perfect tense.

Why use Soy here instead of Estoy? Isn't dropping the glass a temporary mistake?

While dropping the glass happened just now, the speaker is stating that being clumsy (torpe) is a general personality trait. We use the verb ser (here, soy) for permanent characteristics, rather than estar which is used for temporary states or locations.

Does vaso mean any kind of glass?

No, vaso specifically means a drinking glass, like one you would use for water. If you were talking about the material glass (like in a window), you would use vidrio or cristal. If you broke a wine glass, you would say copa.

I learned that Latin American Spanish often prefers the simple past. Could I say rompí el vaso instead?

Absolutely. In many parts of Latin America, people would say rompí el vaso (I broke the glass) even if it just happened. However, he roto (I have broken) is completely correct, widely understood, and a great way to practice these irregular past participles!