What were the 3 main types of trenches in ww1

Why was russia drawn into a conflict with germany after ausria-hungary declared war on serbia ?

What was new about the writing system developed by the phoenicians, and why was this important to the growth of knowledge and spread of ideas?

Using the prompt, which ideas are most influenced by the petition of right? a) common law b) bill of rights c) divine right of kings d) declaration of independence