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The isotope 31P3 - has how many protons, neutrons and electrons?
Feudalism
Was a legal arrangement in preindustrial Europe that bound peasants to the land and obliged them to give their landlords a set part of the harvest. In exchange, landlords were required to protect peasants from marauders and open their storehouses to feed the peasants if crops failed.
Social System
An organized set of interrelated structures that function together to maintain balance within a society.
Progressive Tax
A taxation system where the tax rate increases as the taxable income or amount increases, placing a higher burden on those who have the ability to pay more.
Income Tax
A tax that governments impose on income generated by businesses and individuals within their jurisdiction, based on the income or profit earned.
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