Which explorer was first to travel to the South American coast?

On September 20, 1519, Magellan set sail from Spain in an effort to find a western sea route to the rich Spice Islands of Indonesia.

It might've been Christopher Columbus but I know it's one of the two, sorry for making this hard for you!

these civilizations were located around fertile rivers, where they could produce an abundance of crops

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.