But could the same thing happen in the United States?

Or, how could this ever happen in the United States?

When was the last time that happened in the United States?

Nothing was very real to him that did not happen in the United States.

This is what happened in the United States during the early 1970s.

This happened not just in the United States but around the world.

"That doesn't really happen in the United States until the first half of the 20th century."

Therefore, it is important for us to know what will happen in the United States.

During that first week 9/11 happened in the United States.

Nothing of the kind has happened so far in the United States.