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The neolithic Revolution began 10,000 b.c
Parts of the world impacted in the Neolithic Revolution started around 10,000 B.C. in the Fertile Crescent, a boomerang-shaped region of the Middle East where humans first took up farming.
The importance of the neolithic revolution is people trade to get resources they do not have in their own area. As Neolithic people became more skilled in their crafts, they wanted materials to improve the strength and beauty of the things they made.

Past importance.
The Neolithic Revolution was the critical transition that resulted in the birth of agriculture, taking Homo sapiens from scattered groups of hunter-gatherers to farming villages and from there to technologically sophisticated societies with great temples and towers and kings.

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Gunpowder was invented in the 9th century
Gunpowder: Origins in the East. “Gunpowder,” as it came to be known, is a mixture of saltpeter sulfur, and charcoal. Together, these materials will burn rapidly and explode as a propellant.
Past importance-
Their explosive invention would become the basis for almost every weapon used in war from that point on, from fiery arrows to rifles, cannons and grenades. Gunpowder made warfare all over the world very different, affecting the way battles were fought and borders were drawn throughout the Middle Ages.

Modern importance - It has largely been supplanted by smokeless powder as a propellant for ammunition in guns, black powder is still widely used for ignition charges, primers, fuses, and blank-fire charges in military ammunition.

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Columbus "discovers" the americas (1451-1506)

The explorer Christopher Columbus made four trips across the Atlantic Ocean from Spain: in 1492, 1493, 1498 and 1502. He was determined to find a direct water route west from Europe to Asia.
Christopher Columbus introduced horses, sugar plants, and disease to the New World, while facilitating the introduction of New World commodities like sugar, tobacco, chocolate, and potatoes to the Old World. The process by which commodities, people, and diseases crossed the Atlantic is known as the Columbian Exchange
Christopher Columbus was a navigator who explored the Americas under the flag of Spain.

His voyages across the Atlantic paved the way for European colonization and exploitation of the Americas.

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The industrial revolution began in the 18th century

The Industrial Revolution was the transition to new manufacturing processes in Great Britain, continental Europe, and the United States, in the period from about 1760 to sometime between 1820 and 1840.

industrial Revolution, in modern history, the process of change from an agrarian and handicraft economy to one dominated by industry and machine manufacturing.

This process began in Britain in the 18th century and from there spread to other parts of the world. Although used earlier by French writers, the term Industrial Revolution was first popularized by the English economic historian Arnold Toynbee.

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Plastics made possible the development of computers, cell phones, and most of the lifesaving advances of modern medicine. Lightweight and good for insulation, plastics help save fossil fuels used in heating and in transportation.
Over the last 50 years plastics have saturated our world and the creation of new materials also helped free people.
Plastic is an everyday use in our modern day lives, we use plastic for eating ,drinking , and the products we use come in plastic.

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The green revolution
the emergence of new varieties of crops, specifically wheat and rice varietals.
Green revolution, great increase in production of food grains (especially wheat and rice) that resulted in large part from the introduction into developing countries of new, high-yielding varieties, beginning in the mid-20th century. Its early dramatic successes were in Mexico and the Indian subcontinent.
rural income can be raised and rural poverty be alleviated.

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Neil armstrong steps onto the surface of the moon

At 10:56 p.m. EDT, American astronaut Neil Armstrong, 240,000 miles from Earth, speaks these words to more than a billion people listening at home: “That's one small step for a man, one giant leap for mankind.” Stepping off the lunar landing module Eagle, Armstrong became the first human to walk on the surface of the moon.
The moon landing taught us about the composition of the moon. It gave us the first perspective of the Earth from Space.

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The syriun cilvil war begins

The Syrian civil war is an ongoing multi-sided civil war in Syria fought between the Syrian Arab Republic led by Syrian president Bashar al-Assad and various domestic and foreign forces that oppose both the Syrian government and each other, in varying combinations.

Since its start in 2011, the Syrian Civil War has created the largest refugee population in the world, constituting over a third of the global refugee population.