creating a hieroglyphic writing system
inventing an accurate calendar system
The Maya were a pre-Columbian people who inhabited the region of Mesoamerica (present-day Mexico, Guatemala, Belize, etc.). They peaked during the period from 250 AD to 900 AD, known as the Classic Period. The Maya are known to have had one of the most sophisticated pre-Columbian civilizations. In addition, they developed large cities and had advanced knowledge in areas such as mathematics. After 900 A.D., the Maya went into decline, and their cities emptied out.
The Maya became well known for having very advanced knowledge in areas such as Astronomy and Mathematics. In the religious field, the Maya were polytheists, that is, they believed in several gods and had human sacrifice as a very important ritualistic practice. These sacrifices were also of considerable political importance to these people.
Politically, they were organized in city-states, which means that the Maya never formed an empire with consolidated borders. The power of kings extended, exclusively, over the domains of their cities and satellite cities, if any. They survived from agriculture, and their main food was corn.
Actually, you've got two (2) incomplete sentences that need best word or phrase to be complete: "<em>Caesar Augustus made sure that the central government controlled </em><u><em>tax collection</em></u><em>.</em>" "<em>Engineers built the </em><u><em>Field of Mars</em></u><em>, which had government offices and statues.</em>"
Thus, the correct answers are "tax collection" and "Field of Mars".
The third sentence is already complete: <em>"A </em><em>mail service</em><em> was created to improve communication." </em>
Also, the last sentence: <em>"Caesar Augustus ordered the construction of </em><em>aqueducts</em><em>, which improved water supplies and provided water for crops." </em>is also complete.
These matters fall under the topic "Roman Empire: At Its Height," and they primarily concern Caesar Augustus.
Learn about Caesar Augustus's main reason for ordering the construction and renovation of buildings in Rome: brainly.com/question/15641074
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Collective security is connected to the idea that collectively, countries decide to not wage wars on each other and respect peace for example by intervening if there is a conflict somewhere and mediating in this conflict.
The correct answer is: <span>(2) coordinating global peacekeeping</span>
<span> Eastern Christianity consists of the </span>Christian<span> traditions and churches that developed in the </span>Middle East<span>, </span>Africa<span>, </span>Eastern Europe<span>, </span>Asia Minor<span>, the </span>Balkans<span>, </span>Southern India<span> and parts of the </span>Far East<span> over several centuries. The term does not describe a single </span>communion<span> or </span>religious denomination<span>. Some Eastern churches have more in common historically and theologically with Western Christianity than with one another. The various Eastern churches do not normally refer to themselves as "Eastern", with the exception of the </span>Assyrian Church of the East<span> and its offshoots.</span>