China's isolation began from physical barriers like the Gobi Desert, but kept up due to political ideals like Communism. Being isolationist allows for optimum control with little to no exterior influences. Extending isolationist policies has allowed for media control, therefore public control. Their protectionist policies have also allowed the nation to vastly expand their economy. By encouraging only exporting and limited importing, the nation has become self-reliant and built up the strongest growing economic force of the century.
The economic and political benefits to China's government have encouraged them to continue mostly isolationist policies.
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China's desire to isolate from outside influences stems from a desire to protect its political system and national sovereignty. The government believes that outside influences, such as Western ideologies or foreign cultures, could threaten its control over the country and undermine the Communist Party's authority. By limiting external influences, China aims to maintain stability and preserve its vision for development.
Scientists isolate DNA to study its structure, sequence, and function. By isolating DNA, scientists can analyze specific genes, create genetic maps, and understand how genes contribute to traits and diseases. Isolating DNA also allows for techniques like PCR and DNA sequencing to be performed.
They share electrons when they try and corm covalent or ionic bonds. This is because the atoms want to gain a full outer shell. So when they share electrons they can have full shells.
Having just 18 electrons make Calcium nobel.
The happy atoms are the noble gases. They don't react because their valence electron shells are full. The goal of every element is to have the most outer shell of electrons full. The first shell holds 2 electrons, and every shell after that holds 8 electrons. So helium and hydrogen both want to have 2 electrons in their outer shells. Elements like neon and argon have 8 electrons in their outer shells. Atoms like chlorine and fluorine have 7 electrons in their outer shells. This means that aren't "happy" because they want to have 8. This is why they ionically bond with atoms like sodium that have 1 electron in their outer shells. Sodium gives that electron to chlorine and now both have 8 electrons in their outer shells.
The largest ethnic group in China is the Han Chinese, which comprises the majority of the population, accounting for around 91% of the total population.