How medieval merchants moved money without carrying cash

Medieval merchants could move money without carrying cash

A bill of exchange let a merchant put money down in one town and receive payment in another. This avoided the danger of carrying cash over long distances. The bills could also be transferred or sold, so they became valuable financial objects themselves.

The Sun and Moon nearly match in size

The Sun and Moon appear nearly the same size in Earth’s sky because the Sun is about 400 times wider but also about 400 times farther away. This alignment allows both total and annular solar eclipses.

Ravens may hide food based on what another raven can see

Ravens protect hidden food when a stronger rival can watch them. They also protect it when they can hear the rival nearby through a small opening but cannot see it directly. This suggests they may keep track of what another raven is able to see.

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How medieval merchants moved money without carrying cash

Medieval merchants could move money without carrying cash

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