What was the first major battle for african american troops in the union army?

The correct answer is the Battle of Port Hudson (also known as the Siege of Port Hudson.)

I hoped this helps you :)

a countries leader should be motivated by the common good of the country.

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.