ONE WAY TO LOOK AT IT.

US Federal Reserve lowers interest rates to create liquidity. 
The Price of oil goes up sopping up liquidity, as the key pivot/pillar/building block  to economic growth oil shows it’s power in the dance between fiat money and commodities.

                                                          VS

The 4 Posts

                                                                   ILLINOIS
                                                                   CHICAGO

CALIFORNIA                
LOS ANGELES                                                                        NEW YORK                          

                                                                   TEXAS
                                                                   DALLAS
                                                                   HOUSTON

The cross or diamond shape that create the 4 posts that are the major metropolitan areas that create the exoskeleton for the perimeter of the Continental United States.