This is the 2522nd most frequent Japanese word.
各国
"各国" means "each country" or "various countries" in English.
Here, '各国' is used as the subject of the sentence, specifying 'each country's' in the context of discussing their cultures and customs.
各国の文化や習慣には独特な特徴があります。
Each country's culture and customs have unique characteristics.
'各国' is used to mention multiple countries collectively as entities that should take action together.
各国が協力して国際問題を解決するべきです。
Countries should cooperate to solve international problems.
In this case, '各国' refers to various or individual countries in the context of their cuisines.