Answer:
who's leonard, and what is he apprenticing in?
Answer:
2. More than 80%
3. Steel and Elevator
4. Developed the first vaccinations
Answer: They walked across the Mediterranean area to Asia, then the land bridge formed between Asia and Alaska and they crossed it resulting in Native Americans
Explanation:
Sub to Jacksepticeye
Answer: While building the city Tenochtitlan on the islands of lake Texcoco, the Aztecs faced swampy lands with no foundations and soil that was bad for farming.
Explanation: Because the islands in lake texcoco did not have very solid ground, the Aztecs had trouble building their city. They overcame these challenges by building canals to reroute the water.
It was forgotten in it's time because no one cared about being civil and listening to what EVERYONE wanted and being at peace with one another. They thought fighting in a war would help them simmer their dispute. Today, we don't fight over lands and things as much as we used to. While South America and North America are still fighting, *not in a huge war* it's not the same as it was then.