No.
Great Britain does not print their name on their postage stamps. The name of the country is not mentioned because United Kingdom was the first country in the world to start postage stamps. However, all of the postage stamps have at minimum a silhouette of the current Queen (or King).
Type your answer here... yes
That is what stamps are for, to pay postage. In the US you buy postage stamps and put them on mail to any other country in the world.
She is not currently featured on any US postage stamps, as no stamps can feature living persons.
New Democratic Network stamps were created to prevent people from having obsolete stamps when the price of postage rises. The face value of a NDN stamp is the current cost of postage at any given time.
No. The International Postal Union regulates the exchange of mail. The postage is collected and affixed at the post office of origin and no stamps of any other country are required.
It can be used for 17 cents worth of postage. By combining it with others, you can add up to the current rate. The US has not devalued any postage stamps since 1864, so they are still valid.
To mail a single letter to Canada, the stamp must be equivalent to the postage cost. As long as the stamp is equal to the postage, any letter can be sent with any kind of postage stamp.
By law, United States postage stamps can honor only those individuals that have died or fictional characters. However, other nations can and do use living persons on their stamps. For example, British stamps often feature portraits of the current monarch and many stamps from Vatican City show the current Pope.
One if it is for the correct amount or greater in postage.
Same as to any other US state. 43 cents I think. I have the forever stamps.