Puberty occurs when a part of the brain called the hypothalamus begins to produce a hormone (gonadotropin) that has an effect on the testes and ovaries causing an increase sex hormone — estrogen in girls and testosterone in boys.
The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861 because of uncompromising differences between the free and slave states over the power of the National Government to prohibit slavery in the territories that had not yet become states.
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Domesticated animals: The Americas had not seen horses, pigs, or cattle prior to the arrival of the Europeans.
These animals changed how Native Americans lived, ate, and fought. They were able to use horses to travel more quickly, fight their enemies, and eventually in agriculture. The animals also brought disease which harmed the Native Americans.
