What allows the united states to be a major part of the global community

A. modern communication and technology.

Explanation:

This is the answer that best explains why the United States is a major part of the global community. Trade unions are not particularly relevant internationally, nor are they only a feature of the United States. Moreover, foreign goods would not make a difference in the international arena. Finally, the United States is not a good example of a country with cheap labor. However, it is a leader in modern communication and technology.

here are some events that to cause increased conflict between the north and south

1) mexican cession- gaining modern day california, utah, arizona, and new mexico from mexico. caused southern and northern politicians to fight over whether or not there would be slavery in these newly acquired territories.

2) uncle tom's cabin- this famous book described the cruelty of slavery in the south during the antebellum period, causing more northerners to support abolition and southerners to resent the book as they felt it unfairly depicted southern society.

3) kansas- nebraska act- disagreements over whether or not kansas and nebraska would be free or slave states caused issues between northern and southern politicians in congress.

4) bleeding kansas- this fighting took place in kansas after congress allowed this territory to vote on whether or not they would have slavery. citizens were killed and buildings were destroyed during this fighting.

the use of email to replace slower surface mail.