The advancements of the cell phone and internet technology
<span>hexaneb. etherc. formaldehyded.....there are so many moleucles eve maybe water can be one :)</span>
The founders of the US most likely took ideas from the Romans because their system allowed for the citizens to have a voice in who ran their empire. Considering that the US just broke away from Great Britain when starting a new country, they wanted to ensure that their citizens had a voice. When the Americans were colonists, they had little/no influence on government policies and laws.
The Romans established a republic for very similar reasons, as they had a tyrannical king who they overthrew. With a new start, the Romans created a government where people got to elect political officials, there were term limits for the two consuls, and the Senate (comprising of 300 people) had the chance to make laws. The United States probably saw this as a highly effective system in which multiple voices could be heard, so they based our foundation on the ones created by the Romans.
Answer:
El paracaídas es, como su nombre indica, un artefacto diseñado para frenar las caídas mediante la resistencia generada por él mismo al atravesar el aire del cielo, logrando una velocidad de caída segura y prácticamente constante.
Explanation:
Leonardo estaba fascinado por la forma helicoidal, que por otro lado existe profusamente en la propia naturaleza.
Utilizó una variante del principio de Arquímedes, diseñando una hélice a escala, que puede decirse es el antecesor del helicóptero y las hélices de las embarcaciones actuales.
