"1.    Natives were thrown of their land"
"2.    Diseases were also spreading while exploring" 
"3.    Slaves were brought from country to country"
"4.    Pirate invasions made it difficult to travel"
"5.    People were given harsh punishments for not obeying" 
"6.    Pirates(danger) was found on land as well as water"
"7.    Slow travelling made it difficult to pass an urgent message"
"8.    Keelhauling is worst in winters because the water is chilly around"
"9. More deaths occured in the Age of Exploration"
"10. People were always tensed"