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.
The best definition of a citizen is a person who gives allegiance to a Government.
Allegiance means that he gives loyalty to the Country.
This sentence technically doesn't contain an error in verb-noun agreement, however the noun "each one" is odd here. It should be "everyone"
D-Day<span>, the Battle of Normandy. The Battle of Normandy was </span>fought<span> during World War II in the summer of 1944, between the Allied nations and German forces occupying Western Europe.</span>