The answer to this question is <span>motion parallax
</span>Motion parallax<span> is an event when view objects that are closer to us as moving faster than those that's located further than us.
</span><span>This event is cause by relative velocities of objects moving across the retinae gives larger visual effects in close range distance rather than long ranged</span>
<span>Pope Leo X lives in Vatican City, which is inside Rome. So, Rome was the central power of Europe at that time.
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When trying the rebuild the St. Peter's Basilica the church ran out of money for the project. So, Pope Leo X started selling indulgences for money.
Sorry I only got two.
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