Magnitudes are based on a logarithmic scale (base 10). For each whole number you go up, the amplitude of the ground motion recorded by a seismograph goes up ten times. Using this scale, a magnitude 5 earthquake would result in ten times the level of ground shaking as a magnitude 4 earthquake (and 32 times as much energy would be released).
1 unit increase corresponds to 10 fold increase in magnitude.
The primary motivation behind borderland in spain is securing Mexico by each mean including European forces. Spanish borderland is situated on North American realm of Spain.
Spanish borderland incorporates Spanish Louisiana, Florida, Texas, Arizona, Gulf Coast of northern side, California, Mexico and related northern regions. Spanish borderland is isolated into eastern (Mississippi Valley, Florida, Louisiana and so forth.) and western borderland (Texas, Arizona,New Mexico and California).
Spanish borderland encompassed Florida by eighteenth century likewise invigorated Atlantic and Gulf coast, and colonized focuses Texas and New Mexico.
The accumulation of neighboring regions of Spain in choice A is valid.
From the map of borderland of Spain and neighboring territories we find that the locale lie South West of area of San Antonio, subsequently choice B is right. Additionally, this is the dry subtropical district.
Choice C, Present-day American states among Florida and California where Spain once "held influence", is likewise evident in light of the fact that Spanish borderland is above Mexico and in the middle of Florida and California.
Choice E is right , Spanish Borderland incorporates the given urban communities alongside different well known urban communities of borderland.
