In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

[Q]: Passage: As the 19th century progressed, the United States government's Indian removal policy pushed Native American tribes west of the Mississippi River.  In 1830, the Indian Removal Act was signed into law, and though that act did not directly address the Potawatomi people of Indiana, it led to several additional treaties that resulted in their removal.  In what came to be known as the Potawatomi Trail of Death, about 860 Potawatomi Indians who had refused to leave were forced to move from Indiana to Kansas.  On September 14, 1838, the group camped near Williamsport, and on September 15 they camped in the southwestern part of the county before moving into Illinois.  Before reaching their destination in Kansas, over 40 of them had died, many of them children; two children died and were buried at the second Warren County campsite.When the county was established, the Wabash River was vital to transportation and shipping.  Zachariah Cicott traded up and down the river, and cities like Attica, Perrysville, Baltimore and Williamsport were founded near the river's banks and flourished because of it.  In the 1840s, the Wabash and Erie Canal began to operate and provided even broader shipping opportunities, but the canal favored towns which were on the "right side" of the river; the canal was on the Fountain County side, and towns like Baltimore dwindled as a result.  Some towns, such as Williamsport and Perrysville, managed to participate in canal traffic through the use of side-cuts that brought traffic from the canal across the river.  When railroads were constructed starting in the 1850s, they in turn began to render the canals obsolete and allowed trade to reach towns that lacked water connections.  The canal continued to be used through the early 1870s.
[A]: What decade did the canals that provided broader shipping opportunities start to decline due to railroads?


[Q]: Passage: In the 1960s, in an undetermined place in the Alps, an eagle couple has two hatching eggs. When both eaglets are born, their mother knows that she must only raise one as their successor. In an ensuing fight with another eagle, the eaglets' father dies when he crashes to the ground. One of the eaglets shortly falls from the nest, and his mother, due by nature to maintain the survivor, ignores the eaglet's cry for help.
In the meantime, forester Danzer meets with a boy named Lukas and his father Keller. They both live in a new house in the mountains, after the death of Maria, mother of Lukas and Keller's wife, as a result of a fire. Keller, gravely afflicted by the death of his wife, fails to live in harmony and understanding with his son, who takes refuge more and more in nature, avoiding contact with his father. As a retreat Lukas constantly goes to the remains of his old house, where he often sees the photograph of his deceased mother.
As Lukas' dog Scout is taking a walk in the forrest, Lukas comes across the eaglet, and Lukas decides to raise him to full health. Lukas takes the eaglet to his old house to take care of him. Danzer also meets the eaglet, and decides to help Lukas for the affection he feels for him.
The forester tells Lukas that the food he has given the eaglet is not good. He also tells him to give sunlight to the eaglet. When a fox sneaks in and kills Keller's hens, he angrily chases Lukas. Lukas, fearful for the safety of the eaglet, goes to his family's hut. Lukas rescues the eaglet from the attacking foxes. As Lukas stays and reads his family's Bible, he comes across the story of Cain and Abel. Aptly fitting the eaglet's own story, Lukas names it Abel.
[A]: Who was married to the father of the boy that the forester meets?


[Q]: Passage: The independence of the Thirteen Colonies in North America in 1783 after the American War of Independence caused Britain to lose some of its oldest and most populous colonies. British attention soon turned towards Asia, Africa, and the Pacific. After the defeat of France in the Revolutionary and Napoleonic Wars (1792–1815), Britain emerged as the principal naval and imperial power of the 19th century. Unchallenged at sea, British dominance was later described as Pax Britannica ("British Peace"), a period of relative peace in Europe and the world (1815–1914) during which the British Empire became the global hegemon and adopted the role of global policeman. In the early 19th century, the Industrial Revolution began to transform Britain; so that by the time of the Great Exhibition in 1851, the country was described as the "workshop of the world". The British Empire expanded to include most of India, large parts of Africa and many other territories throughout the world. Alongside the formal control that Britain exerted over its own colonies, its dominance of much of world trade meant that it effectively controlled the economies of many regions, such as Asia and Latin America.During the 19th century, Britain's population increased at a dramatic rate, accompanied by rapid urbanisation, which caused significant social and economic stresses. To seek new markets and sources of raw materials, the British government under Benjamin Disraeli initiated a period of imperial expansion in Egypt, South Africa, and elsewhere. Canada, Australia, and New Zealand became self-governing dominions.By the start of the 20th century, Germany and the United States had begun to challenge Britain's economic lead. Subsequent military and economic tensions between Britain and Germany were major causes of the First World War, during which Britain relied heavily upon its empire. The conflict placed enormous strain on the military, financial and manpower resources of Britain. Although the British Empire achieved its largest territorial extent immediately after World War I, Britain was no longer the world's pre-eminent industrial or military power. In the Second World War, Britain's colonies in East and Southeast Asia were occupied by Japan. Despite the final victory of Britain and its allies, the damage to British prestige helped to accelerate the decline of the empire. India, Britain's most valuable and populous possession, achieved independence as part of a larger decolonisation movement in which Britain granted independence to most territories of the empire. The transfer of Hong Kong to China in 1997 marked for many the end of the British Empire. Fourteen overseas territories remain under British sovereignty.
[A]:
What war accelerated the end of the British empire?