well there was the big bang and then some stuff happened. Hope this helps will ;)

big bang happened 10-12 million years ago I need when sumer happened and ended to so I can put it into a timeline version

Best pictorial representation of the Big Bang Theory is the extension of the Wilkinson Microwave Anisotropy Probe (WMAP) mapping of the Cosmic Microwave Background Radiation (CMBR) barrier, known online as the Graphical Timeline of the Big Bang.

Better known as the "Dark Ages", the Universe was opaque (Foggy). Estimates vary but it is believed to have lasted between 150 -> 800 million years after the Big Bang.

However, with the first stars developing around 400 million years after the Big Bang, the "Dark Ages" would have ended shortly after the first stars.

See related link for a timeline of the Big Bang.

According to the believes of physics and the big bang, we know that the big bang was both big and a bang. Since we are still receiving radiation from the big bang, So considering that factor I would say that it was big and a bang. What do you believe?