In 1873 Bolivia signed a secret treaty of defensive alliance with Peru. This would be used as an argument 5 years later in Chile, when it unleashed the War of the Pacific. The secret alliance forbade Bolivia from signing a border treaty with Chile, without consulting with Peru. However, in 1874 Chile and Bolivia signed a border treaty, which replaced the previous treaty of 1866. One of its points was not to impose new taxes on individuals, industries and Chilean capital for 25 years.