Nouns ending in -ment are masculine.
The suffix often marks an action or result derived from a verb.
Is gouvernement masculine or feminine?
legouvernement
The rule behind it
99.6% of -ment nouns are masculine
In context
Le Gouvernement Japonais a pris une importante décision.
The Japanese government made an important decision.
Nous avons étudié la politique économique du gouvernement.
We studied the government's economic policy.
Le gouvernement va probablement gagner les prochaines élections.
The sitting government is likely to win in the coming election.