"This book describes the Japanese government in the last century."

Translation: Buku ini menggambarkan pemerintahan Jepang di abad lalu.

[JamesTWils]

Why does one use tentang here but not in any of the other sentences including menggambarkan.

[Rick392366]

Why does one use tentang here but not in any of the other sentences including menggambarkan.

You're right.
'tentang' should not be used here in this sentence (imho).

[_adrianpop_]

What's the difference between pemerintah and pemerintahan? One of the last lessons introduced pemerintahan as the translation for government. Terima kasih banyak!

[ChrisNeedh5]

Would 'pada' be able to be used in place of 'di' in this sentence? So, 'Buku ini menggambarkan pemerintahan Jepang pada abad lalu'?