Think of computers and Information Technology. Back in the 1960s computers were certainly being used by large organizations. After all, they had been invented back in the 1940s. However, you little calculator is far more powerful than the biggest of those huge, expensive machines!
I need to know the synonym of the underlined words( After all).
And this is not surprising, because...
And this makes sense, because...
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.