What role did jade and obsidian play in the Mayan economy? Jade and obsidian were used by the Mayan as astronomical tools.
Jade was used by the Mayan for crop rotation and farming techniques.
Jade and obsidian were traded by the Mayan through an extensive network.
Obsidian was used by the Mayan to build canals for irrigation.

Match each characteristic with the correct leader. allied his country with germany and italy responsible for ukrainian great famine chancellor of germany leader of the blackshir

How did the completion of the transcontinental railroad change the lives of american citizens? a-it increased the wealth of all americans and enabled them to travel more.b-it made cross-country travel too expensive for ordinary americans.c-it decreased the safety of americans who moved to settle the plains.d-it shortened travel time between the east and west for all americans.

Why did president johnson decide not to run for reelection in 1968?