There were lots of foreign changes that presented challenges for the US. I'll give you a few examples from different time periods. First would be when England wanted to tax the Americans in the Revolutionary period. They did this to try and restrict America's freedom. Another example would be that Russia had spies during the cold war period. This was to gain intelligence of the US war plans. Also when Germany sent the Zimmerman Telegram to Mexico during the WWII period. This was to get Mexico to launch a surprise attack on the US.
Answer:
The number one cost is the amount of lives lost. At least 600,000 people died during the civil war. A human life has no price. So no other cost comes close to the amount of deaths that occurred because of the grueseom civil war. (I DONT HAVE THE ANALYZE IT PASSAGE SO I CAN'T PUT QUOTES.)
The war was costlier for the North. Even though they won, and they got what they wanted. And the south lost their slaves, the North paid way more in human lives. (Add quotes. If you don't have differences in human lives lost, just mention slaves were lost by south)
Explanation:
...Charged very high prices to move farm products to market
The farmers felt the railroads had monopoly power over them. The farmers essentially had no choice but to send their crops to market on trains. There was not much, if any, competition on most short-line tracks that went through farm areas. Therefore, most farmers had to simply accept whatever price railroads charged to transport crops. Farmers felt the railroads could gouge them by charging high prices and that they, the farmers, had no recourse when this happened. They blamed much of their trouble on this monopoly power.
The constitution supply that an amendment may be propound further by the congress with two-thirds majority vote in both the house of representatives and the senate or by constitutional convention called by two-thirds of the state legislature. none of the 27 amendments to the constitution have been propound by constitutional convention.
Hope this helped!
Nationalism is taking pride in one's own nation. So put country in the blank my friend.