Why might people see or remember things differently?

Because people experience the world differently.

Everything, from their point of view to the emotions they were feeling at the time, can influence how somebody remembers something.

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

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