Long ago, a sad thing happened. 
Long ago, many people met in a garden. 

In 1919, many people gathered in a garden. 
Brigadier-General Reginald Dyer led British troops to the garden.
Many people died that day. Some counts say 379 people died. Other counts say 1,500 or more died. Over 1,200 people were hurt. Some people jumped into a well to try to escape. This well is called the Martyrs' Well. The event made many Indians lose faith in British rule. It led to more protests for freedom. In 2019, Britain expressed deep regret for what happened.
The Jallianwala Bagh massacre was a very sad event in history. It happened in Amritsar, a city in the Punjab region of British India. 
To understand why this happened, we must look at the laws at that time. The British government passed the Rowlatt Act to limit certain freedoms. This happened after World War I, when many people in India were already suffering. They faced high taxes and a deadly flu pandemic. 
On the day of the massacre, Brigadier-General Reginald Dyer arrived at the garden.
Many people were hurt or killed during the shooting. Estimates of the deaths vary from 379 to 1,500 or even more people. Over 1,200 others were injured, and many of those injuries were very serious. Some people even jumped into a well to try to find safety. This is known as the Martyrs' Well. The event caused great anger across the whole nation. Winston Churchill called the attack "unutterably monstrous."
This event had a huge impact on the future of India. It caused many people to lose faith in the United Kingdom. This anger helped start the non-cooperation movement between 1920 and 1922. 
The Jallianwala Bagh massacre was a major turning point in the history of British India. 
To understand the event, one must look at the political climate of the time. During World War I, India provided many resources and soldiers to the British war effort. However, the end of the war brought high inflation and heavy taxation to India. A deadly flu pandemic also caused great suffering. In response to growing unrest, the British passed the Defence of India Act in 1915 to limit civil liberties. This was followed by the Rowlatt Act in 1919. This new law allowed the government to limit political freedoms even further. Many Indian leaders, including Muhammad Ali Jinnah, protested these restrictive laws.
Tensions in the Punjab region grew very high throughout early 1919. There were disruptions to telegraphs and railways. The Lieutenant Governor of Punjab, Michael O'Dwyer, believed there was a conspiracy for a coordinated revolt. 
On April 13, 1919, the situation reached a breaking point in the Jallianwala Bagh.
Dyer took control of the single exit with his troops. 
The human cost of the massacre was very high. Estimates of the death toll vary from 379 to as many as 1,500 people. More than 1,200 people were injured during the shooting. Of those injured, 192 people sustained serious injuries. 
The massacre changed how the British military approached civil unrest. The Imperial British military re-evaluated its role when dealing with civilians. They decided to use "minimal force whenever possible" in the future. The army was retrained to use less violent tactics for crowd control. However, historians note this policy was not always followed in later conflicts. While Britain has never formally apologized, it expressed deep "regret" in 2019. Today, memorials in Amritsar serve as a way to remember the victims. 
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