People from Japan began immigrating to the U.S. in significant numbers following the political, cultural, and social changes stemming from the 1868 Meiji Restoration.
Further developments included the start of direct shipping between San Francisco and Japan in 1855 and established official diplomatic relations in 1860.
[6]: 26 Rumors of better standards of living in the "land of promise" encouraged a rise in immigration to the US, especially by younger sons who (due in large part to the Japanese practice of primogeniture) were motivated to independently establish themselves abroad.
As the number of Japanese in the United States increased, resentment against their success in the farming industry and fears of a "yellow peril" grew into an anti-Japanese movement similar to that faced by earlier Chinese immigrants.
[8] Increased pressure from the Asiatic Exclusion League and the San Francisco Board of Education forced President Roosevelt to negotiate the Gentlemen's Agreement with Japan in 1907.
[5]: 27–46 [6]: 25 [10][page needed] It was only in 1952 that the Senate and House voted on the McCarran-Walter Act, which allowed Japanese immigrants to become naturalized U.S. citizens.
Similar to European American settlers, the Issei, the majority of whom were young adult males, immigrated to America searching for better economic conditions and the majority settled in Western Pacific states settling for manual labor jobs in various industries such as ‘railroad, cannery and logging camp laborers.
[6]: 25 This transition occurred relatively smoothly due to a strong inclination to work in agriculture which had always been an occupation that had been looked upon with respect in Japan.
Nevertheless, second-generation Nisei were not impacted by these laws as a result of being legal American citizens, therefore their important roles in West Coast agriculture persisted[6]: 29 Japanese immigrants brought a sophisticated knowledge of cultivation, including knowledge of soils, fertilizers, skills in land reclamation, irrigation, and drainage.
This knowledge combined with Japanese traditional culture respecting the soil and hard work, led to successful cultivation of crops on previously marginal lands.
[11]: 75 [12] According to sources, by 1941 Japanese Americans "were producing between thirty and thirty-five per cent by value of all commercial truck crops grown in California as well as occupying a dominant position in the distribution system of fruits and vegetables.
Agricultural programs were put in place at relocation centers with the aim of growing food for direct consumption by inmates.
"[15] Prior to World War II, Seattle's Nihonmachi had become the second largest Japantown on the West Coast of North America.
[16] East of Lake Washington, Japanese immigrant labor helped clear recently logged land to make it suitable to support small scale farming on leased plots.
Prior to World War II, some 90 percent of the agricultural workforce on the "Eastside" was of Japanese ancestry, also 90% of produce sold at the Pike Place market in Seattle were from the Japanese-American farms from Bellevue and the White river valley.
Nebraska Nisei Ben Kuroki became a famous Japanese-American soldier of the war after he completed 30 missions as a gunner on B-24 Liberators with the 93rd Bombardment Group in Europe.
When he returned to the US he was interviewed on radio and made numerous public appearances, including one at San Francisco's Commonwealth Club where he was given a ten-minute standing ovation after his speech.
On October 5, 2010, Congress approved the granting of the Congressional Gold Medal to the 442nd Regimental Combat Team and the 100th Infantry Battalion, as well as the 6,000 Japanese Americans who served in the Military Intelligence Service during the war.
[21] Under the 2001 budget of the United States, it was decreed that the ten sites on which the detainee camps were set up are to be preserved as historical landmarks: "places like Manzanar, Tule Lake, Heart Mountain, Topaz, Amache, Jerome, and Rohwer will forever stand as reminders that this nation failed in its most sacred duty to protect its citizens against prejudice, greed, and political expediency".