In the ancient history of China, the Three Kingdoms period was an era full of wars and turmoil. However, compared with other historical periods, the border problems during the Three Kingdoms period were relatively less. This was mainly due to the strength and strategies of the three countries: Wei, Shu, and Wu.

Firstly, the three countries of Wei, Shu, and Wu were relatively strong in military strength. Wei had powerful cavalry and archers, Shu had elite infantry and mountain warfare capabilities, while Wu excelled in naval and amphibious warfare. These military strengths enabled the three kingdoms to have sufficient capabilities for self-defense and counterattacks against external threats.

Secondly, the political situation during the Three Kingdoms period was relatively stable. Although wars frequently occurred between the three kingdoms, they were able to resolve disputes through diplomatic means, avoiding prolonged war consumption. At the same time, political alliances between the three kingdoms also played a stabilizing role. For example, Shu and Wu formed an alliance to jointly resist Wei, while Wei allied with Wu to counter Shu.

In addition, the economic development during the Three Kingdoms period also provided support for border tranquility. Despite frequent wars, the three kingdoms strived to develop their economies and improve people's living standards. This helped enhance national cohesion and the ability to resist foreign invaders.

In summary, the lack of serious border problems during the Three Kingdoms period was mainly due to the strength and strategies of the three countries of Wei, Shu, and Wu in military, political, and economic aspects. These factors jointly maintained border tranquility during the Three Kingdoms period.

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