Simply because oil-bearing rock was formed millions of years ago, and is buried deep in the Earth's crust, due to being covered by successive layers of sediment.
No, it is not possible to drill into Earth's core due to extreme temperatures and pressures found at great depths. The deepest hole ever drilled, the Kola Superdeep Borehole in Russia, reached a depth of about 7.5 miles before it had to be abandoned due to technical difficulties.
China
The cost for a Hitachi Drill can differ. A good place to find a Hitachi Drill is Lowes. Lowes has great prices and a person can find a Hitachi Drill for a good price.
Oxygen can not penetrate to great depth.
Jiggsaw has a great cordless drill that is easy to use and produces plenty of power.
In great detail.
we recovered due to world war 2 and by giving our allies supplies for the war
approx 17km
Chicago recovered, it grew, it expanded, it improved and it progressed in the aftermath of the disaster.
Lake Erie
sounds great.
I am not sure it was a great tragedy to the French. A valuable painting was stolen from the Louvre, it was a great loss for the museum, and of course the painting had to be recovered.