What is an ambassador?

Question

for example ambassador of the united states

Answer 1

There are different types of ambassadors, but in general, the ambassador is the head of an embassy who represents his/her country to the host country.

http://en.wikipedia.org/wiki/Ambassador

Answer 2

Mr. A is head of embassy of India in US. He is ambassador of India in US. He is representative of parent country.

Answer 3

An ambassador is a diplomatic official accredited to a foreign sovereign or government, or to an international organization, to serve as the official representative of his or her own country. In everyday usage it applies to the ranking government representative stationed in a foreign capital. The host country typically allows the ambassador control of specific territory called an embassy, whose territory, staff, and even vehicles are generally afforded diplomatic immunity in the host country.