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mandatory spending takes up a huge part of the federal government's budget. list and briefly explain the three main mandatory expenditures.
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Explanation:

I answered your other question which was similar:

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The mandatory expenditures are monies that the federal government has to spend. The largest one is retirement i.e. social security. Because retired people previously paid the government through social security tax, the government must pay them back when they retire. Heath care is another - if the government does not help the people in need, they will die. The third main mandatory expenditure, as the other helper has explained, is payments on debts that we owe other countries.

isaac newton first proposed that earth was not perfectly round. instead, he suggested it was an oblate spheroid—a sphere that is squashed at its poles and swollen at the equator.

the idea of the earth being a flat disc is also inconsistent with the fact that a given lunar eclipse is only visible from half of the earth at a time. the only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient greeks deduced that this must mean the earth is spherical.

there were abundant sources of fuel nearby