Is it illegal to find out someone's ip address?

No if it's for a common person (not government affiliated). But if you are looking for it for malicious intent then it's considered a federal felony.

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.