Answer:
tiles
Explanation:
you could just talk about how how two tiles slide across each other, causing friction, etc
Roal Amunsen was the first.
Westward expansion meant that the US acquired ever increasing amounts of land, and needed people, farmers, to settle there so it could maintained without a huge military presence
Well right now there are issues such as unemployment, government corruption, crime, access of clean water, and energy shortages.
In the future there could be issues such as lack of better healthcare treatments and equipment and better education.
A because they tell by their texture.
