C. The increase in the use of coal as a source of heat and energy
The League of Nations was formed to unify many countries. It wasn't very efficient. The United Nations was essentially an improved version of the League of Nations.
government offered land give away . Railroad sold land to farmer for low price.
Brainliest Please :)
Answer:
Chinampa*floating islands* allowed the Aztecs to grow food and build structures
Pyramids
<span> representative i think</span>
