Rivers provides transportation routes is the most common eco system
President James Monroe announces another U.S. outside strategy activity that winds up plainly known as the "Monroe Doctrine." The neutralist position of the Monroe Doctrine was likewise a foundation of U.S. remote approach in the nineteenth century, and it took the two world wars of the twentieth century to draw a reluctant America into its new part as a noteworthy worldwide power.
Answer:
B
Explanation:
Control a heavily desired or needed supply/luxury that is only known to exist in 1 part of the world, and you have a monopoly on it, and you can control the price to your liking, and other countries can't do anything about it, so if they want it, they'll have to pay the price you set.
Grocery store: bags, wages, (employees)/ insurance property taxes and inventory
