What event(s) lead to treaty 7 in Canada?

The written treaty ceded roughly 130,000 km² of land from the Rocky Mountains to the west, the Cypress Hills to the east, the Red Deer River to the north, and the US border to the south. All nations kept the rights to use the land for hunting.

Explanation:

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

answer: c  

the factory goes out of business, causing the workers to lose their jobs.

explanation: