O would say c but im not 100%
<span>These were all southeast Asian kingdoms. More specifically, they were in the North and South Vietnam areas. These were competing factions that constantly were struggling with each other for power during the 1400s and 1500s, and were looking to get a foothold on power in the southern part of the Asian continent.</span>
The question is asking to determine what continent is not yet touched by the European explorers, and i would say that the answer would be that they explored every continent and the last one of them is Antartica. I hope you are satisfied with my answer and feel free to ask for more
