The Mexican-American War was a conflict between the United States and Mexico, fought from April 1846 to February 1848. ... It stemmed from the annexation of the Republic of Texas by the U.S. in 1845 and from a dispute over whether Texas ended at the Nueces River (the Mexican claim) or the Rio Grande (the U.S. claim).
California has the most electoral votes because it has the biggest population. 50 million rounded people live there. In comparison, Texas only has about 28 million or so.
Like most of the American population, Japanese immigrants came to the U.S. in search of a better life. Some planned to stay and build families in the United States, while others wanted to save money from working stateside to better themselves in the country from which they had come.