What were joseph pulitzer and william randolph hearst well known pioneers of?

Engaging in a style of publishing called yellow journalism.

Explanation:

William Randolph Hearst, from the New York Journal and Joseph Pulitzer, from New York World were pioneers of a journalist style that emerged in the late 1800s called yellow journalism. The main characteristics of this type of newspapers were exaggeration, dishonesty and sensationalism. Its goal was to catch people's attention.

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.

c

explanation: