What did article 10 of the treaty of versailles include ?
a. a collective security provision
b. a plan for rebuilding germany
c. an opt-out cause for russia
d. a reduction in international trade tariffs

Article 10 of the Versailles Treaty. The most controversial of the League of Nations covenants, Article 10 said that all nations must protect the territorial and political integrity of other League members. The article meant that if one nation was engaged in war, all others must become involved

a. always outside of government control.

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.