Which of the following statements is true about immigration to the united states during the last two decades of the nineteenth century?
(a) united states immigrantion laws sharply reduced the number of eligible immigrants.
(b) irish immigrants came in larger numbers than earlier in the century.
(c) nativist agitation brought about a decline in immigration.
(d) the united states government entered into a "gentleman's agreement" to ban immigration from certain countries
(e) southern and eastern europeans came in larger numbers than earlier in the century.