Problem: The first U.S. Army post established in Montana was Camp Cooke on the Missouri River in 1866 to protect steamboat traffic going to Fort Benton, Montana. More than a dozen additional military outposts were established in the state. Pressure over land ownership and control increased due to discoveries of gold in various parts of Montana and surrounding states. Major battles occurred in Montana during Red Cloud's War, the Great Sioux War of 1876, the Nez Perce War and in conflicts with Piegan Blackfeet. The most notable of these were the Marias Massacre (1870), Battle of the Little Bighorn (1876), Battle of the Big Hole (1877) and Battle of Bear Paw (1877). The last recorded conflict in Montana between the U.S. Army and Native Americans occurred in 1887 during the Battle of Crow Agency in the Big Horn country. Indian survivors who had signed treaties were generally required to move onto reservations.
What year did the Battle of Bear Paw happen?
The answer is the following: 1877

Problem: In the Miocene Epoch the mountains underwent severe erosion because of glaciation, which was noted in the mid-19th century by naturalist Louis Agassiz who presented a paper proclaiming the Alps were covered in ice at various intervalsa theory he formed when studying rocks near his Neuchatel home which he believed originated to the west in the Bernese Oberland. Because of his work he came to be known as the "father of the ice-age concept" although other naturalists before him put forth similar ideas.
Who noted the severe erosion of the mountains?
The answer is the following: Louis Agassiz

Problem: Switzerland has a dense network of cities, where large, medium and small cities are complementary. The plateau is very densely populated with about 450 people per km2 and the landscape continually shows signs of human presence. The weight of the largest metropolitan areas, which are Zurich, GenevaLausanne, Basel and Bern tend to increase. In international comparison the importance of these urban areas is stronger than their number of inhabitants suggests. In addition the two main centers of Zurich and Geneva are recognized for their particularly great quality of life.
What does the weight of the largest metropolitan areas tend to do?
The answer is the following: increase

Problem: In the Eastern Empire the slow infiltration of the Balkans by the Slavs added a further difficulty for Justinian's successors. It began gradually, but by the late 540s Slavic tribes were in Thrace and Illyrium, and had defeated an imperial army near Adrianople in 551. In the 560s the Avars began to expand from their base on the north bank of the Danube; by the end of the 6th century they were the dominant power in Central Europe and routinely able to force the eastern emperors to pay tribute. They remained a strong power until 796. An additional problem to face the empire came as a result of the involvement of Emperor Maurice (r. 582602) in Persian politics when he intervened in a succession dispute. This led to a period of peace, but when Maurice was overthrown, the Persians invaded and during the reign of Emperor Heraclius (r. 610641) controlled large chunks of the empire, including Egypt, Syria, and Asia Minor, until Heraclius' successful counterattack. In 628 the empire secured a peace treaty and recovered all of its lost territories.
During the reign of what Emperor did the Persians occupy Egypt?
The answer is the following:
Heraclius