What does 联合 (lián hé) mean in English?

Card 615HSK 2010 Level 5615/1311
CARD615
PROGRESS47%
联合
聯合
lián hé
to combine; to join; unite; alliance

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d