Which statement is a valid generalization about
immigration to the united states?
(1) asian immigration was encouraged throughout the 2oth century.
(2) few restrictions on european immigration
existed before the 192os.
(3) the original constitution strictly limited
immigration.
(4) federal immigration policies have not
changed since 1900.

the right choice would be a. culture within the city-state. c. loyalty to the police. d separation by land and sea.

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.