Answer:
Straight lines and closed
Explanation:
A polygon only has straight lines and there is no open space.
Answer:
As the country grew, certain elements led some towns to morph into large urban centers, while others did not. The following four innovations proved critical in shaping urbanization at the turn of the century: electric lighting, communication improvements, intracity transportation, and the rise of skyscrapers.
Explanation:
Answer:
more people would try to invent new things
Explanation:
as people got an opportunity to Express his or her talent and what one can invest and may come up to new things that the world may benefit and also the person got an encouragement to continue his or her talent and not stopping to invent and that is why today in our modern world it is due to that we are surviving
Answer:
the last one practical they are trying to heal the sick and hungry africans. i hope i helped
Explanation:
