Final answer:
The period of significant Asian migration to the United States began in the mid-nineteenth century and saw another notable increase post-1952 following changes in immigration policy, notably beneficial laws like the Refugee Act of 1980 and the McCarran-Walter Act which opened up opportunities despite quotas.
Step-by-step explanation:
The period when many Asians migrated to the United States saw significant changes in patterns and attitudes towards immigration. The first major wave of Asian immigrants arrived in the mid-nineteenth century, largely Chinese laborers drawn by the Gold Rush and the demand for railroad construction. In the second half of the twentieth century, following the enactment of laws like the Refugee Act of 1980 and changes in immigration policy, there was a notable increase in Asian immigration, including people from Korea and Vietnamese refugees after 1975.
Throughout the years, Asian immigrants faced challenges, including discrimination and restrictive legislation such as the Chinese Exclusion Act. However, over time, communities grew through shared cultural expressions via schools, churches, and organizations. The immigration landscapes were altered significantly post-1952 when the McCarran-Walter Act removed race as an immigration barrier, although quotas remained in place. Immigrants formed the fabric of American society through hard work and by establishing family ties, with some using the provision for family reunification to legally immigrate beyond the set quotas.