Populations shift in two ways; one is by movement, the other by Demographics, and both affect politics and elections. One example is how retirees moving to Sunbelt states such as Arizona and Florida resulted in those states becoming politically conservative, while states such as New York, New Jersey, and California, where graduating students and immigrants look for jobs, are more liberal.
As the South's population grew, so did its political influence.
Population shifts in US cities/towns can change voter district lines (redistricting). This can shift the political "leaning" of an entire area or of the entire state.
Doppler effect Red Shift
A blue-shift means an object is moving towards us, a red-shift means it is moving away from us. Blue-shift and red-shift are changes in frequency of the light we receive, due to the relative movement. This is called the Doppler effect.
As the US did not exist until comparatively recently most conflicts in Asia had no effect at all on the politics of the US Very true, but I wouldn't ignore the conflicts in Iraq, Afghanistan, Vietnam, World War II, the Korean Expedition of of 1871 or the Philippine War of Independence. I'm sure some of these have had some effect on US politics but I wouldn't be able to answer your question directly.
The Red Shift or Doppler effect
Stars moving toward our solar system display blue shift as the light waves are compressed because their motion relative to us is a positive vector. Stars moving away from us create red shift, as the waves are stretched. This is similar to the Doppler Effect in sound waves.
If there is no observable Doppler shift, then the star is probably not moving very fast. This refers to the component of the star's movement toward us, or away from us - the "sideways" part of the movement can't be determined by the Doppler effect.
It passed on to us elements of politics, language, arts, building styles.
The Doppler effect can help us identify periodic motion. That's exactly howwe know about many double stars orbiting each other, even when we can'tseparate their images in a telescope.As one of the stars moves in its orbit first toward us, then away from us, thentoward us again, we see its spectrum blue shift, then red shift, then blue shiftagain, with a period of days, weeks, months, or even years.
US and Europe
It was a divisive issue with Jefferson urging US aid to the French and Washington insisting on strict neutrality.
... expanding. The redshift is attributed to the Doppler effect, meaning that those galaxies are receding, or getting away, from us.