The similarity between Mississippi River, Appalachian Mountains, and Rocky Mountains is that they all created a rigid borders that effect the culture and trade of the people on either side of them
<h3>What are the natural features?</h3>
These natural features such as river and mountains were large vast of nature that spread across the U.S. land.
The similarity between them is that they created a rigid borders that effect the culture and trade of the people on either side of them
Therefore, the Option B is correct.
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<em>brainly.com/question/508422</em>
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The correct answer is: "limiting competition"
Regional trade blocks are intergovernment treaties through which several countries agree to eliminate trade barriers among its members, so that they can enjoy free trade and enhance competitiveness within the region. Moreover, they establish a joint external trade policy, setting tariffs and other trade barriers to favour<u> domestic producers cope with competitors from outside the block, limiting the foreigner's ability to compete with products from the trade bloc. </u>
The answer is: Islam became the main religion
About 35 years. Genghis Khan created the Mongol empire in 1206. By the 1230s Batu Khan invaded Russian and Bulgarian lands. In 1241 at the battle of Mohi Batu Khan defeater a combined German, Polish and Hungarian army. Further expansion ceased do to the death of Ogedei Khan. Batu Khans attention was turned to succession instead of invading Western Europe.
