How were conditions on the early earth of more than 3 billion years ago different from those on today's earth?

 Only early Earth was intensely bombarded by large space debris. Earth formed around 4.54 billion years ago by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean; but the atmosphere contained almost no oxygen and so would have been toxic to most modern life including humans. Much of the Earth was molten because of frequent collisions with other bodies which led to extreme volcanism.

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The answer is eastern europe