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: The boards of the covers, previously assumed to be limewood, are now thought to be birch, an unusual wood in later bindings, but one easily available in northern England. Both have four holes where the binding threads were laced through; the two threads were run round the inner edges of the cover and knotted back at the holes. The front cover has an additional 12 holes where the ends of the cords for the raised framing lines went through, at the four corners of the two main frames, and the ends of the horizontal bars between the interlace panels and the central vine motif.The stitching of the binding uses "Coptic sewing", that is "flexible unsupported sewing (produced by two needles and thread looping round one another in a figure-of-eight sewing pattern)" Coptic sewing uses small threads both to attach the leaves together and, knotted together, to attach the pages to the cover boards. Normal Western binding uses thread for the former and thicker cord running across the spine of the book for the latter, with the thread knotted onto the cords. Coptic sewing is also found in the earliest surviving leather bookbindings, which are from Coptic libraries in Egypt from the 7th and 8th centuries; in particular the design of the cover of one in the Morgan Library (MS M.569) has been compared to the St Cuthbert Gospel. In the techniques used in the binding, apart from the raised decoration, the closest resemblance is to an even smaller Irish pocket gospel book from some 50 years later, the Cadmug Gospels at Fulda, which is believed to have belonged to Saint Boniface. This is also in red goatskin, with coloured incised lines, and uses a similar unsupported or cordless stitching technique. The first appearance of the cords or supports that these "unsupported" bindings lack is found in two other books at Fulda, and they soon became universal in, and characteristic of, Western bookbinding until the arrival of modern machine techniques. The cords run horizontally across the spine, and are thicker than the threads that hold the pages together. They are attached, typically by lacing through holes or glue, to the two boards of the cover, and the threads holding the gatherings are knotted to them, resulting in a stronger binding.
[A]: Which types of boards have four holes where the binding threads were laced through?

[Q]: Passage: Temples built in and around the Kalyani region (in the Bidar district) were quite different from those built in other regions. Without exception, the articulation was nagara, and the temple plan as a rule was either stepped-diamond or stellate. The elevations corresponding to these two plans were similar because star shapes were produced by rotating the corner projections of a standard stepped plan in increments of 11.25 degrees, resulting in a 32-pointed interrupted plan in which three star points are skipped in the centre of each side of the shrine. Examples of stepped-diamond plans surviving in Karnataka are the Dattatreya Temple at Chattarki, the Someshvara Temple in Kadlewad, and the Mallikarjuna and Siddhesvara at Kalgi in the Gulbarga district. The nagara shrine at Chattarki is a stepped diamond of projecting corners with five projections per side. Because of the stepped-diamond plan, the wall pillars have two fully exposed sides, with a high base block decorated with a mirrored stalk motif and two large wall images above. The shapes and decorations on the rest of the wall pillar have a striking resemblance to the actual pillars supporting the ceiling.The other type is the square plan with simple projections and recesses but with a possibility of both sekhari and bhumija superstructures. The plan does not have any additional elements save those that derive from the ground plan. The recesses are simple and have just one large wall image. The important characteristic of these nagara temples in the Kalyani region is that they not only differ from the dravida temples in the north Karnataka region but from the nagara temples north of the Kalyani region as well. These differences are manifest in the articulation and in the shapes and ornamentation of individual architectural components, giving them a unique place in Chalukyan architecture. Temples that fall in this category are the Mahadeva Temple at Jalsingi and the Suryanarayana Temple at Kalgi in the modern-day Gulbarga district. The plan and the nagara articulation of these temples are the same as found to the north of the Kalyani region, but the details are different, producing a different look.
[A]:
What shrine location has wall pillars with two fully exposed sides, with a high base block decorated with a mirrored stalk motif?