1. how did the death of archduke franz ferdinand instigate (urge on) the collapse of peace in
europe?

What is an example of a secondary source?

To encourage railroad companies to build railroads across the west, the government gave them subsidies by select the best answer from the choices provided. a. paying the wages of laborers b. giving them building materials c. providing railroad trains d. providing free land

During 1915-1917, u-boats attacked not only enemy ships but also