For the first question I can give you a few important achievements but to put it in your own words you should describe them yourself.
Important Mayan achievements: architecture, astronomy, and math. Myans were great builders and built many roads, cities, and temples with intricate designs. This is just some information about the maya.
Fun fact: I am actually taking a test in mesoamerican civilizations tomorrow. I got this straight from the slides the teacher made.
Hope I could help, Good Luck!
- La galleta ⇝ "la"
- Los camarones ⇝ "los"
- El pescado ⇝ "lo"
- Tú ⇝ "te"
- Elena y Mónica ⇝ "las"
- Los dueños ⇝ "los"
- Ana ⇝ "la"
- Diego y yo ⇝ "nos"
- Yo ⇝ "me"

To replace the accompanying noun, write a <u>direct object</u>. They can be replaced if it is masculine it is "lo" (singular) or "los" (plural) and if it is feminine it is "la" (singular) or "las" (plural).
The <u>indirect object</u> replaces the one who receives the verb. It can be replaced, if it is in the third person, "le" (singular) or "les" (plural); they can also be replaced by unstressed pronouns (me, se, te, nos, os).
When a direct object and an indirect object are joined, <u>the indirect object must be put first and then the direct object</u>. When a third person indirect object is added, put "se".
<h3><em><u>MissSpanish</u></em></h3>
Es urgente que nosotros (1) (resuélvanos ) este problema. Definitivamente, es imposible (2) (hacer) la grabación de la novela mañana, porque no tenemos los permisos de la ciudad. Y lo peor es que el director duda que nosotros (3) (habremos) enviado la carta a tiempo, incluso me dijo: "Le prohíbo (4) (salir) de la oficina sin antes mostrarme la carta". ¡Ah!, otra cosa, también dudo que los artistas (5) (entiendan) esto. Por eso necesito que tú (6) (hables) con el jefe y le expliques todo.
Explanation: