Which statement about immigration to the united states between 1860 and 1900 is true?
a. crop failures and starvation at home sent nearly one-quarter of the population of ireland to america.
b. many russian jews refused to immigrate to america because they feared they would face persecution here.
c. the u. s. government encouraged china and japan to send more immigrants to fill jobs on the west coast.
d. a revolution in germany brought political freedom that practically ended immigration from that country.