Which of the following was a reason world war ii began?

germany was not happy with the dominance of the united states as a world power.
the effects of the depression in europe
russia's disregard for the treaty of versailles
japanese bombing of u.s. ships

There are several reasons World War 2 (1939 -1945) begin. Some of them are :
- the Treaty of Versailles : The treaty required that Germany pay a huge sum of money called reparations. The problem with the treaty is that it left the German economy in ruins.

- Japanese expansion :Japan began to look to grow their empire in order to gain new resources. They invaded Manchuria in 1931 and China in 1937. 

- the Fascism (Franco in Spain, Mussolini in Italy and Hitler in Germany).These dictators wanted to expand their empires and began to look for new lands to conquer.

- Unstable governments as a result of the economic suffering after the World War 1(The great depression)

All of the answers mentioned in the question are reasons for the begin of World War 2.

The Industrial Revolution and the Space Race

Explanation:

The Industrial Revolution: Transformed economies that had previously been based on agriculture and handicrafts into economies based on large-scale industry, mechanized manufacturing, and the factory system (more efficient). New machines, new power sources, and new ways of organizing work made existing industries more productive and efficient and allowed further innovation in all facets of life.

Space Race: Changed how humanity understood and interacted with the wider universe; led to vast advancements in travel, weaponry, science, astronomy, and now economy as private companies are working on space trips using technology and knowledge learned during the Space Race.