Answer:
European nations staked claims on paper while tribes claimed the ground itself, but the border remained a work in progress, an imaginary line, until troops clashed and treaties settled the question.
In 1849, after the Mexican-American War, the United States sent teams of surveyors, soldiers and laborers to mark this new line in the desert, which sounded simple but proved difficult. The teams struggled as the Southwest seethed with conflict.
Explanation:
Main: What is autism?
1-5 ideas:
How does it affect those who have it and those around them?
What are the symptoms?
How is autism caused?
What are the statistics for autism? (What percent has it)
Can it be prevented?
Can it be cured?
I honestly know very little about autism, but I hope this is helpful, I did some brainstorming, but if you need more ideas let me know.
