Answer: a treaty between two or more countries to make trade easier and to destroy trade barriers
It was the "Oregon Train" that brought settlers to the Willamette Valley, sine although there were other smaller trails in the region, this was the most traveled by those wanting to start new lives and businesses in the region.
Your answer is:
Egyptian hieroglyphs were the formal writing system used in Ancient Egypt.
The proposition that he suggested was that the states should unite into a single union. What inspired him to propose this was the idea on how the Iroquois nation united five different Native-American nations under a single banner into a single union. Nobody supported this but eventually they started supporting the idea.