Answer:
D. Lower birthrate
Explanation:
The graph shows more old people than young people which is most easily explained by lower birth rates.
This might be confusing because of the Black plague but that was only between 1346-1353
hope this helps :)
The primary purpose of the Iroquois League was "<span>D. to bring independent nations together for mutual defense and common concerns", since European invaders had begun to seek more territory. </span>
Republic
Unitary state
Semi-presidential system
Constitutional republic
B. It could be transported easily on Rivers and turnpikes
