Who was the first european to discover the pacific ocean by crossing the isthmus of panama?

According to historical sources, the first European to discover the Pacific Ocean was Vasco Nuñex de Balboa. This ocurred on the 25th of September 1513, almost a month after he departed from Santa Maria La Antigua del Darién.

Explanation:

Balboa embarked in this expedition to assert his power over the Spanish Colony near the gulf of Uraba, and to use the supposed riches of the new sea to hold his defense against his enemies that had sent envoys to the Spanish Court of Charles V.

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.