Much of Eastern Europe is characterized by A) a humid subtropical climate.
B) moderate average temperatures.
C) dry winters and warm, wet summers.
D) cold, snowy winters and hot summers.

Migration people get up and go cause they feel it is best for them 

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Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.