background music↓
2010s
https://www.youtube.com/watch?v=ACCBrt7dAkY
2000s
https://www.youtube.com/watch?v=t1jDnZDIbao&t=18s
1990s
https://www.youtube.com/watch?v=VBB4uMUQCD0
1980s
https://www.youtube.com/watch?v=bke-CSyg7b8&t=67s
1960s
https://www.youtube.com/watch?v=rsHcnPKQ4EA
1940s
https://www.youtube.com/watch?v=QyOJqHCDU4Q&t=2s
1900s
https://www.youtube.com/watch?v=8TuMWzJd6RM
1800s
https://www.youtube.com/watch?v=wVT3mMk8ua0&t=26s
1000s
https://www.youtube.com/watch?v=3wvQk57vwHY&t=37s
200s and 100000 years ago
https://www.youtube.com/watch?v=GumiH_bLNBs&t=54s
2010s
https://www.youtube.com/watch?v=ACCBrt7dAkY
2000s
https://www.youtube.com/watch?v=t1jDnZDIbao&t=18s
1990s
https://www.youtube.com/watch?v=VBB4uMUQCD0
1980s
https://www.youtube.com/watch?v=bke-CSyg7b8&t=67s
1960s
https://www.youtube.com/watch?v=rsHcnPKQ4EA
1940s
https://www.youtube.com/watch?v=QyOJqHCDU4Q&t=2s
1900s
https://www.youtube.com/watch?v=8TuMWzJd6RM
1800s
https://www.youtube.com/watch?v=wVT3mMk8ua0&t=26s
1000s
https://www.youtube.com/watch?v=3wvQk57vwHY&t=37s
200s and 100000 years ago
https://www.youtube.com/watch?v=GumiH_bLNBs&t=54s