Detailed Explanation:

I. Swadeshi Sevak Home – Vancouver (a): Founded by Balwant Singh in 1907 to support Indian immigrants in Canada and promote nationalist activities.

II. United India House – Seattle (b): Established as a center for Indian revolutionary activities and to unite Indians in the Pacific Northwest region.

III. Yugantar Ashram – San Francisco (c): Founded by Har Dayal in 1913, served as the headquarters of the Ghadar Party and published the revolutionary newspaper Ghadar.

IV. INA (Azad Hind Fauj) – Rangoon (d): The Indian National Army under Subhas Chandra Bose had its headquarters in Rangoon (now Yangon) during World War II (1942-1945).

Correct matching: I–a, II–b, III–c, IV–d