You arrange two rows of pennies so they are equal in length. a child views the rows and states that s/he has the same amount of pennies. you spread out the pennies in the bottom row so it is longer than the top row. the child now states that the bottom row has more pennies. this child is in which of piaget's stages? sensorimotor preoperational formal operational concrete operational

The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.