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Towards the end of the Lê Dynasty, civil strife engulfed much of Vietnam. First, the Chinese-supported Mạc Dynasty challenged the Lê Dynasty's power. After the Mạc Dynasty was defeated, the Lê Dynasty was reinstalled, but with no actual power. Power was divided between the Trịnh Lords in the North and the Nguyễn Lords in the South, who engaged in a civil war for more than a hundred years. The civil war ended when the Tây Sơn brothers defeated both and established their new dynasty. However, their rule did not last long and they were defeated by the remnants of the Nguyễn Lords with the help of the French, who established the Nguyễn Dynasty.

French colonialism

Vietnam's independence ended in the mid-1800s, when the country was colonized by the French. The French administration imposed significant political and cultural changes on Vietnamese society. A Western-style system of modern education was developed, and Christianity was introduced into Vietnamese society. Developing a plantation economy to promote the exports of tobacco, indigo, tea and coffee, the French largely ignored increasing calls for self-government and civil rights. A nationalist political movement soon emerged, with leaders such as Phan Boi Chau, Phan Chu Trinh, Emperor Ham Nghi and Ho Chi Minh calling for independence. However, the French maintained dominant control of their colonies until World War II, when the Japanese war in the Pacific triggered the invasion of Indochina. The natural resources of Vietnam were exploited for the purposes of Japan's military campaigns into Burma, the Malay Peninsula and India.

In the final years of the war, a forceful nationalist insurgency emerged under Ho Chi Minh, committed to independence and communism. Following the defeat of Japan, nationalist forces fought French colonial forces in the First Indochina War that lasted from 1945 to 1954. The French suffered a major defeat at the Battle of Dien Bien Phu and shortly afterwards withdrew from the country. The countries that fought the Vietnam War divided the country at the 17th parallel into North Vietnam and South Vietnam during the Geneva Accords.

Vietnam war

The communist-held North Vietnam was opposed by the United States which had sided with the French colonists in the Battle of Dien Bien Phu. Disagreements soon emerged over the organizing of elections and reunification, and the U.S. began increasing its contribution of military advisers. The disputed Gulf of Tonkin Incident was the immediate reason the U.S. cited for its military assault on North Vietnamese military installations and the gradual deployment of more than 500,000 troops into South Vietnam. U.S. forces were soon embroiled in a guerrilla war with the Viet Cong, the insurgents who were indigenous to South Vietnam. North Vietnamese forces unsuccessfully attempted to overrun the South during the 1968 Tet Offensive and the war soon spread into neighboring Laos and Cambodia, both of which the United States bombed.

The extent of the U.S. bombing of Cambodia has become known only recently. "In 1975, Pol Pot's genocidal Khmer Rouge forces took power in Cambodia after a massive U.S. bombing campaign there. New information reveals that Cambodia was bombed far more heavily during the Vietnam War than previously believed — and that the bombing began not under Richard Nixon, but under Lyndon Johnson." Maps and a database of bombing by the U.S. Air Force of Laos, Cambodia and Vietnam was created from data the United States provided in an effort to help locate unexploded ordnance left behind during the U.S. carpet bombing of the region.[1]

Questions & Answers

how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Central eurasian tag. OpenStax CNX. Feb 08, 2009 Download for free at http://cnx.org/content/col10641/1.1
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