B) The mining and cattle ranching industries increased in the West.
Railroad made transporting resources and goods to cities to be manufactured and processed which encouraged growth in the western industries.
Mining for gold, silver, iron, and tin contributed to production of manufactured goods. The ability to make money off of the mining industry attracted settlers. Ranching also increased in production with land opening up in the southwest and railroads connecting ranching areas to major meatpacking cities, like Chicago.
Answer:
Permian - Triassic
Cretaceous - Tertiary
Explanation:
There are two extinction events that influenced greatly the evolution of dinosaurs. The first one was the Permian -Triassic mass extinction, where 95% of the species went extinct. This mass extinction ended the reign of the sinapsids, thus it opened up space for the reptilians, including the ancestors of the dinosaurs. Once the majority of ecological niches were free for taking, the dinosaur ancestors quickly started to evolve and soon after gave rise to the first true dinosaurs. As they were the ones that managed to exploit the environment the fastest, they became the dominant animals on the planet. That lasted until the Cretaceous -Tertiary mass extinction. The dinosaurs died out during this extinction, so their reign was over. Only one branch of the dinosaurs lineage managed to survive, the birds. The birds initially managed to dominate around the world, but with so many empty niches the mammals quickly evolved and managed to out-compete them.
the first federal civil rights legislation to be passed since 1875, authorized the federal government to take legal measures to prevent a citizen from being denied voting rights.
The Nazis and the Soviets had agreed to not engage in fighting because Hitler was focusing on the West, and Russia did not want to get involved. Hitler broke this pact, however, by launching an unprovoked and unexpected attack on Russia through the code name Operation Barbarossa.