Scientists _____ (already / unlock) many secrets of DNA by the time they mapped the human genome.
had already unlocked
N_______ M_______, who _____ (lead) the anti-apartheid movement, became South Africa's first Black president.
Nelson Mandela, lead
In _______, Columbus _____ (sail) to the Americas, marking a turning point in world history
1492, sailed
The ancient _________ _____ (build) the pyramids as tombs for their pharaohs.
Egyptians, built
This leader once said, 'I came, I saw, I conquered' after a swift victory - _____________
Julius Caesar
Who _____ (discover) penicillin in 1928, leading to the antibiotic revolution?
discovered
Marie Curie _____ (win) the Nobel Prize _______ by the time she passed away.
had won, twice
When the __________ Wall _____ (fall) in 1989, it symbolized the end of the Cold War.
Berlin, fell
The Romans _____ (use to bathe) in public baths, which were an important part of social life
used to bathe
She _____ (say), 'Let them eat cake,' though many historians believe this quote is misattributed." - _________________
said, Marie Antoinette
The printing press _____ (change) the way knowledge spread when it was invented by Gutenberg.
changed
In his younger years, Einstein _____ (use to struggle) with his schooling before he became a famous _________
used to struggle, physicist
By the time World War I _____ (end), Europe _____ (change) forever.
ended, had changed
Before Rome fell, it _____ (conquer) vast territories across E______, Asia, and Africa
had conquered, Europe
'' I am not afraid of an army of lions ____ (to lead) by sheep, but an army of sheep ____ (to lead) by lions" - _____________
led, led, Alexander the Great
Since its discovery, electricity _____ (transform) society and modern technology
has transformed
This leader _____ (inspire) millions with his speeches and peaceful protests during the civil rights movement.
inspired
People in ancient Egypt _____ (use to bury) their dead with items they believed would help in the afterlife
used to bury
Historians believe the Maya civilization _____ (collapse) partly because of drought and environmental challenges
collapsed
The history of all hitherto existing society is the history of class struggles - _____________
Karl Marx
Ancient C_________ inventors _____ (use to create) paper, gunpowder, and the compass long before these inventions reached Europe.
Chinese, used to create
By the time she founded modern nursing, F_______ Nightingale _____ (already / work) to improve hospital conditions
Florence, had already been working
When the Industrial Revolution began, _______ _____ (replace) many manual jobs, changing how people lived and worked.
factories, replaced
Since it was first excavated, the ancient city of Pompeii _____ (give) us valuable insights into R_______ life
has given, Roman
“In the long history of humankind (and animal kind, too) those who learned to collaborate and improvise most effectively ________________ (to prevail). - _____________________
have prevailed, Charles Darwin