The last country in the world to challenge the United States control of Oregon was Great Britain. Oregon was won in the War of 1812.
It is the third one, dugout canoes. Hope this helped
Answer:
Every major advance in agriculture has allowed global population to increase. Early farmers could settle down to a steady food supply. Irrigation, the ability to clear large swaths of land for farming efficiently, and the development of farm machines powered by fossil fuels allowed people to grow more food and transport it to where it was needed.