I believe the answer is: Australia
The most likely cause of the influx is the signs of economic recovery that united states made from the economic crash that happened on 2001 and 2008.
(the recovery from the dot com bubble that crashed in 2001 began in 2004 and the recovery from the housing bubble that crashed in 2007 began in 2008)
The wind direction can be determine using satellites and in-water buoy data or arrows originating at the buoy sites based upon the location of the highest sea-surface temperature. The wind relates to sea-surface temperature by affecting the level of evaporation at the ocean surface and the direction of the wind causes the change in correlation with wind speed. In addition, sea surface temperature is a water temperature near to the ocean floor.
C. Progressive ideals.
Republican parties usually enforce or take part in a progressive process.