Answer: It indicates that wagon consisting the letter X is the last wagon of the train. It easily alerts the railway officials so that they can save from the accident.
Explanation:
In the former Soviet Union, the system of stratification was based upon communist party membership. <span>During the </span>Soviet<span> era, membership in the CPSU (</span>Communist Party<span> of the </span>Soviet<span> Union) was the most likely and reasonable path to career advancement and wealth in the nation.</span>
The first use of the 25th Amendment occurred in 1973 when President Richard Nixon nominated Congressman Gerald R. Ford of Michigan to fill the vacancy left by Vice President Spiro Agne
People purposefully trekking in a straight line on a tundra from Siberia to Alaska<span>, as if there was some destination on the other side and the only way to get there was to follow the leader, one behind the other.</span>
The technological increases of the Industrial Revolution caused an increased need for raw materials that encouraged the rise of European imperialism<span>
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