It was c because they was the first one I am 98℅ sure.
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
The prophetic mosque
sunnah
the final prophet
These are the circumstances under which the protest of the students in Tinker v. Des Moines would be deemed unprotected speech:
if their action had clearly threatened order and safety.
And since it didn't, there was no reason for it to be deemed unprotected speech.
The European Community from 1957 till 1993 was known as European Economic Community, it helped in post-war recoveries by making migration easy and many others.
<h3>What does the term European economic community(EEC) mean?</h3>
The previously existing European Community (EC) from 1957 till 1993 was changed to European Economic Community (EEC) is aimed at the integration of European economies. It helped in tensions reduction after WWII with reconciliation between France and Germany.
EEC helped in the recovery of post-war European economies by:
- making migration of workers easy
- reduction of trade restrictions among member
- making business from other countries to run smoothly
Therefore option d describes the European economic community's efforts to improve the European economies.
Learn more about the EEC here:
brainly.com/question/27185834