Why did european nations form alliances in the early 1900s?
a. they were unsure they could protect themselves if attacked by larger nations.
b. they wanted more colonies in africa and asia.
c. they wanted to join with others who shared their culture and religion.
d. they wanted to form groups that made trade easier.

A: They were unsure they could protect themselves if attacked by larger nations.

Explanation:

edg2020

where are the statements?

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.