mīlitibus ā lacū Lemannō ad montem Jūram mūrum perdūcit, with (i.e. by means of) his troops he runs a wall from Lake Geneva to Mt. Jura.
Ablative of Cause.
[219]. The Ablative is used to denote cause; as,—
multa glōriae cupiditāte fēcit, he did many things on account of his love of glory.
1. So especially with verbs denoting mental states; as, dēlector, gāudeō, laetor, glōrior, fīdō, cōnfīdō. Also with contentus; as,—
fortūnā amīcī gaudeō, I rejoice at the fortune of my friend (i.e. on account of it);
victōriā suā glōriantur, they exult over their victory;
nātūrā locī cōnfīdēbant, they trusted in the character of their country (lit. were confident on account of the character).
a. fīdō and cōnfīdō always take the Dative of the person ([§ 187], II, a); sometimes the Dative of the thing.
2. As Ablatives of Cause are to be reckoned also such Ablatives as jussū, by order of, injussū, without the order, rogātū, etc.
Ablative of Manner.
[220]. The Ablative with cum is used to denote manner; as,—