<span>They controlled everything that was related with oil extraction, refinement, generation, transportation, deals, and could, in this way, direct the costs and deals since they had no restriction. There are a few things that made Standard Oil a flat coordination imposing business model, yet all in all, it was the way that they purchased up various methods for creation.</span>
Answer:
Slavery played the central role during the American Civil War. The primary catalyst for secession was slavery, especially Southern political leaders' resistance to attempts by Northern antislavery political forces to block the expansion of slavery into the western territories
When people are treated poorly based on their race or skin color
Answer:
A. To keep invaders out of China's walls
Explanation: