The correct answer is C. Arches.
Explanation
The arch is the name by which a type of semicircular structure is known, which is used as a support for buildings because it provides great stability to them, due to the distribution of the load that allows it to support large amounts of weight. This form of architecture developed in ancient civilizations like Mesopotamia. However, its greatest use was in ancient Rome, where it was used in different structures with domestic functions such as sewers, aqueducts and bridges; and larger buildings such as theaters and the monumental Roman Coliseum. So, the correct answer is C. Arches.
Being audience-centered means putting the audience at the center of your presentation. This is a powerful approach to help you really connect and make a difference, rather than just making a speech or presenting dry knowledge.
Audiences respond to presentations that make sense, are relevant to them, reflect careful research and also sound interesting. They also respond to people who show they care, personally.
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What is a socail Group? : A Social group can be defined as two or more people who interact with one another and share similar characteristics.
How are in-groups different from out-groups: An outgroup is any group that you don't belong to, while an ingroup is a group that you associate yourself with.
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Answer:
The expansion of railroads impacts the development of the United States by creating jobs, establishing a national market, establishing a cattle industry on the Plains, and allowing certain people to acquire great wealth through investing in the railroad.
