Why did world war 1 started and who caused it

The assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1. After the assassination, Austria-Hungary threatened war on Serbia. ... At this point, Europe was at the brink of going to war.

Explanation:

World War 1 started when Archduke Franz Ferdinand of Austria was assassinated on June 28, 1914. This was the immediate cause but there were a series of events which triggered the war.

d) the constitution rights of native americans and their right to self-government on reservations

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.