If you are talking about the renaissance period, patrons were extremely important for art. Patrons were usually wealthy nobles or merchants or bankers such as the Medici family for example in Florence who commissioned works of art from great artists of the time such as Rafael or Michelangelo. It is highly likely that without their wealth and their support that art of the time would not even be developed to the extent that it was.
Because of the fears that immigrants will "distort or spoil" existing cultural values.
Answer:
the return trip was upstream => against the flow of the river.
If there isn't a fourth choice then i believe the correct answer would be "b" a governor cause a president has authority over everything and a mayor is mostly pinned to a town or city.
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Rational numbers are closed under division is a wrong statement. rational number is any number which can be expressed in the form of p/q where p and q are integers. zero can be expressed as 0÷2, 0÷3, 0÷4 etc. ... So 0 is a rational number.