Answer: people
Explanation: thought out of my head
D. Catalyst
A catalyst is a reason for an event to occur.
Answer is D.
Desert and tundra regions are marked by their absence of trees, which indicates little to no rainfall in the area.
3 the history of the United Nations
a chronology is a sequential order of (events), and history, of course, happened in a documented order of events.
Im sorry its late, and im that this is probably wrong, but im guessing that it is c,mapping
