I think trenches had zigzag patterns because they could make people had a better aim at shot and more protection.
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Money goes in a bank
...had not been able to agree on whether to allow slavery in New Mexico Territories and New Mexico...
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The Declaration of Independence was written so that those who couldn't get formal schooling could read and understand what it was saying.It was written for the average person of that time to be able to comprehend.
The correct answer is - pull factors.
The increased freedom and much more employment opportunities in the United States can be considered as pull factors. They can be considered as pull factors because they are big reasons why people from all around the world got attracted to the idea of migrating to the United States, as they saw a nice chance to prosper and have a better life. Most of the countries were still struggling with the freedom issues, and the employment opportunities were either very limited, or badly payed, so no wonder that pople wanted to move in the United States.
