United States Of America, United States, America, USA
proper noun, の adjective
America is the country of rice. I guess this is from all those rolling plains and such we have. Another way to say America in Japanese is アメリカ, but this is another more formal (and older) way. "Rice Country" aka United States Of America, United States, America, or USA.
べいこく
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
主人は米国にいます。
My husband is in the United States.
米国へ入るには、パスポートとビザがいります。
To enter the United States, you need a passport and visa.
米国は五十の州が有ります。
The United States has fifty states.