A country in southeast Asia between Burma and Laos used to be called Siam. What is it called today?

My answer is Thailand. Is this right?

How many countries does the Antarctic Circle pass through? My answer is zero. It does not pass through any countries. Is this right? Thanks for your help!

2 answers

Yes, it is Thailand, and there are no countries inside the Antarctic circle except the land claimed by different countries.
For a map of Antarctic claims by various nations, see
http://en.wikipedia.org/wiki/File:Antarctica.CIA.svg

Most countries do not recognize these claims.