The answer is
A. Zhu Yuanzhang (the Hongwu Emperor)
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The answer to this question is the ARCH and CONCRETE. Arch is
a curve structure that was used by the Ancient Romans. Arches have different
forms that produce vaults and arcades. While concrete is a composite material
that is formed by mixing of cement and by sand, gravel, or stones.
its B. Kennedy blockaded Cuba to stop soviet ships suspected of having nuclear weapons on board.
Early in 1939, the world's scientific community discovered that German physicists had learned the secrets of splitting a uranium atom. Fears soon spread over the possibility of Nazi scientists utilizing that energy to produce a bomb capable of unspeakable destruction.
Scientists ALBERT EINSTEIN, who fled Nazi persecution, and ENRICO FERMI, who escaped Fascist Italy, were now living in the United States.
Answer:
A good posture is one that places the least amount of stress on your muscles and joints
Explanation:
Good posture is a balanced body position, which ensures the effective functioning of the musculoskeletal system. When the muscles and joints are located correctly, it is much easier for a person to perform everyday movements: bend down to take a bag, climb up the stairs, etc.
With insufficient balance, the normal position of the joints (shoulder, knee, ankle and hip) is disturbed. Some muscle groups have to take on overload. Over time, tension arises in these muscles. Others, on the contrary, are weakening. Muscular imbalance develops, which sooner or later develops into poor posture. With a deterioration in posture, the mobility of the joints decreases. Moreover, due to the imbalance between overstressed and weakened muscles, the joints experience a high load, which must be compensated for by something. Pain and stiffness appear; it becomes difficult to perform simple movements. But if a person eliminates this imbalance, the posture will immediately improve (and the pain will disappear).
