Imperialism is the practice of a larger country or government growing stronger by taking over poorer or weaker countries that have important resources.
Step-by-step explanation:
Various motives prompt empires to seek to expand their rule over other countries or territories. These include economic, exploratory, ethnocentric, political, and religious motives.
Due to European Imperialism and many countries arguing over the land they each wanted, tensions were formed between them. Following this, many countries sought alliances between each other to feel secure and this played a big role in the outbreak of the war.