..........................d.......
Cars.
Radio.
Television.
More advanced cars
Mobile phones
C) populism
For future reference: an easy way to remember the causes is to use the acronym MAIN (as in the MAIN causes) to remember that they are militarism, alliances, imperialism, and nationalism.
Hope this helps :)
<span>Colonial slavery usually refers to slavery in the American Colonial period between the early 1600s and the late 1700s when the colonies became independent from Britain. </span>