helped the Aztec farm more productive - chinampas
helped the Inca travel long distances and communicate with their neighbors - rope bridges
helped the Maya view astronomical phenomena such as eclipses with the naked eye - pyramaid at Chichen Itza
President Nixon believed that the <span>president has the privilege of protecting communications</span>
after world war 1 because women got right to vote in 1920 and world war end in 1918
The direct causes of the American revolution include the following:
1. Colonists rights were restricted.
2. Colonists were not represented in parliament.
3. Colonists did not want England ruling from far away.
4. Colonists were frustrated with high taxation.
All these factors led to the war between the American colonists and the British. Great Britain put in place a lot of policies which did not favored the American colonists, this include the payment of tax which the American colonists violently rejected.
