Even though, blah blah blah or Even though, blah blah blah
Should there be a comma after even though?
One more question. If I am writing about events in the past:
I graduated from high school in 1998. It has/had been seven years as the Soviet Union fell apart, and Ukraine has just begun to develop as an independent country.
has been seven years or had been seven years Present perfect, past perfect... I just hate them
And what about the rest of the sentence? Is it correct?