Who are the major European immigrant groups that came to the United States during the nineteenth and early twentieth centuries, and where did they become concentrated?
What will be an ideal response?
Answer: More than 20 millions immigrants arrived primarily from Southern and eastern Europe during the US civil war.....most southern European immigrants were motivated by the economic opportunities in united states.. while eastern european fled religios persecution.
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A passive margin continental shelf has a ________ slope because ________
a. steep; of faulting, volcanism and tectonic deformation b. very gradual; it is covered with sediment from the continent c. flat; tectonic movements have created a flat surface d. steep; it is covered with sediment from the continent
The Bermuda High is also known as the ____________________ High
Fill in the blank(s) with correct word
What economic and cultural forces encouraged many North Americans to settle in downtown neighborhoods instead of in the suburbs in the first decade of the 21st century?
What will be an ideal response?
What statement most accurately describes the theory of seafloor spreading?
A)Subduction zones produce oceanic crust that moves away from these zones by seafloor spreading toward mid-oceanic ridges where it is consumed. B)Oceanic crust continuously forms across the seafloor and is moved by subduction zones toward mid-oceanic ridges where it is consumed. C)Oceanic crust continuously forms at mid-oceanic ridges, moves away from these ridges by seafloor spreading, and is consumed at subduction zones. D)Earth's molten core material erupts at mid-oceanic ridges, moves away from these ridges by seafloor spreading, and is consumed at subduction zones. E)Subduction zones force oceanic crust to spread across the seafloor before being consumed at a fault valley.