Canada and Mexico are USA's neighbours.
A neighboring country is a country that is right next to another country.
You need to be more specific regarding which neighboring country you want to know about for us to answer you. The related question below may help you too.
Cambodia
Mexico (in 1848)
Yes China is neighboring country of India.
As a close neighboring country to the US, they shared the benefits of US industrialization.
Kansas is a US state that only borders other US states : Nebraska, Colorado, Oklahoma, and Missouri.
7 neighboring countriesafghanistanpakistanchinanepalbhutanbangladesh [longest bordering neighbor]myanmar
A country conquers a neighboring country
No neighboring country of Germany begins with the letter O. Oman is the only country in the world that begins with O and it is not near Germany.
Italy, as the Vatican City is the smallest country.
Bangladesh