<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo Izimo zokucwaswa kwempahla yasendlini zenzeka e-United States ezindaweni ezisemadolobheni kusukela ngawo-1930 kuze kube sekupheleni kwawo-1970.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi Izibonelo zokucwaswa kwempahla yasendlini zenzeka e-United States ezindaweni ezisemadolobheni kusukela ngo-1930 futhi kunobufakazi bokuthi lo mkhuba uyaqhubeka ngezinga elithile e-United States namuhla. 