The United States government set out to establish a series of Indian treaties that would force the Indians to give up their lands and move further west onto reservations. ... Once gold was found in the Black Hills, miners were soon moving into the Sioux hunting grounds and demanding protection from the United States Army. hope this helps
C I think southwest
I am not sure bt I think it should be south
I wonder whether there would be also other options, but one very important aspect is the smog: the city center is where many industry-relevant things meet: the factories are all around it, transport, cars... and since it is surrounded by bad air, the air takes longer to dissipate. This is especially visible if the city is in a valley, such as Mexico city foe example.
They advocated for different parts of the state
March of 1932. The Japanese invasion of Manchuria began on 19 September 1931, when the Kwantung Army of the Empire of Japan invaded Manchuria immediately following the Mukden Incident. After the war, the Japanese established the puppet state of Manchukuo. Their occupation lasted until the Soviet Union and Mongolia launched the Manchurian Strategic Offensive Operation in 1945.