Today we're going to discuss the history of the postal service. In the early 19th century, mail was delivered by horse-drawn coaches, which was slow and unreliable. The introduction of the railway in the 1830s revolutionized mail delivery, cutting travel time dramatically. Later, the invention of the postage stamp in 1840 made prepayment possible, which simplified the system. However, it wasn't until the early 20th century that airmail began, initially for urgent documents. So, while rail was a major step, the real turning point for speed came with aviation.
❓ Según la conferencia, ¿cuál fue el desarrollo más significativo para acelerar la entrega del correo?
A. La introducción del ferrocarril en la década de 1830
B. La invención del sello postal en 1840
C. El uso de carruajes tirados por caballos a principios del siglo XIX
D. El inicio del correo aéreo a principios del siglo XX