Answer:
The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. This is because big armies become potential threats to other countries, other countries started forcing alliances in order to secure land. ... The overall cause of World War was the assassination of Archduke Franz Ferdinand.
Answer:What is it? Previewing a text means that you get an idea of what it is about without reading the main body of the text.
When to use it: to help you decide whether a book or journal is useful for your purpose; to get a general sense of the article structure, to help you locate relevant information; to help you to identify the sections of the text you may need to read and the sections you can omit.
To preview, start by reading:
the title and author details
the abstract (if there is one)
then read only the parts that ‘jump out’; that is: main headings and subheadings, chapter summaries, any highlighted text etc.
examine any illustrations, graphs, tables or diagrams and their captions, as these usually summarise the content of large slabs of text
the first sentence in each paragraph
Explanation: if this is wrong i’m sorry
By extending their arguments to address entire nations, some social Darwinists justified imperialism on the basis that the imperial powers were naturally superior and their control over other nations was in the best interest of human evolution.