He Formally Recognized the Soviet Union in an Effort to Stimulate Trade.
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There are 100 Senators in the US Senate. 2 Senators are chosen every 6 years.
The ottoman empire continued to take land or in other words expand due to the organized weak countries they attacked.
Answer: A writeing system, The number 0, and a calender system
Explanation:
The Mayans developed their own writing system known as hieroglyphics. "They developed a written language of hieroglyphs and invented the mathematical concept of zero." according to The Maya: Living Maya Time. It also states that " the Maya developed a complex and accurate calendar system."
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slavery helped improve human courage , strength and will power