What is the name of the supercontinent (large land mass) that once contained all of the continents on earth?

I just learned this today. the answer is Pangea.245 million years ago.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!

answer; randomized controlled trials;