Essay

Ancient Egypt’s “Middle Kingdom” refers to a time in its past. From 1975 BC until 1640 BC, it lasted. The Old Kingdom and the New Kingdom were the first and second apex periods of Ancient … Read more

The transition metals are a group of elements in the periodic table. They are located to the right of the transition metals and to the left of the metalloids. They are also known as “other” … Read more

Mercury is the third element in the twelfth column of the periodic table. It is classified as a transition metal. The mercury atom has 80 electrons and 80 protons with 122 neutrons in the most … Read more

The Spanish, led by conquistador Hernán Cortés, overthrew the Aztec Empire between 1519 and 1521. The Aztecs had experienced a number of ominous omens during the reign of King Montezuma II. These signs, in accordance … Read more

Rhode Island State Song Rhode Island, a U.S. state in New England, is known for sandy shores and seaside Colonial towns. It’s home to several large cities, including Newport, which is famed for sailing and … Read more

The nitrogen cycle describes how nitrogen moves between plants, animals, bacteria, the atmosphere (air) and soil within the soil. Nitrogen is an essential element for all life on Earth. For nitrogen to be used by … Read more

Occupation Explorer and Fleet Commander Born 1371 in Yunnan Province, China Died 1433 known for Treasure Ship voyages to India An outstanding Chinese explorer and navy commander was Zheng He (1371–1433). For the Chinese emperor’s … Read more