through mountains to rivers i think
the in is similar to English and can be interpreted as in, or through or around; montibus is mountain/s; adis to; flumen is rivers (like flow).
The Latin word for river is flumen.
"Strength comes from the mountains."
A/the lofty art/skill in/on the mountains.
Flumen.
The motto of Volta Redonda is 'Flumen Fulmini Flexit'.
The Latin for "Rhine River" is "Flumen Rhenum."
The sentence 'Vir clarus manu sua dextra urbem quae in montibus fuit defenderat' is in Latin. In the word-by-word translation, the noun 'vir' means 'man'. The adjective 'clarus' means 'distinguished'. The noun 'manu' means 'hand'. The adjectives 'sua' and 'dextra' respectively mean 'his' and 'right'. The noun 'urbem' means 'city'. The word 'quae' means 'which'. The preposition 'in' means 'in'. The noun 'montibus' means 'the mountains'. The verb 'fuit' means '[he/she/it] was'; and the verb 'defenderat' means '[he/she/it] defended'. The English meaning therefore is as follows: With his right hand, the distinguished man defended the city which was in the mountains.
advance
It's German for purely ad
well
To/for/from/by mother
to or towards