Native american culture that spread from 250-900 ad that spread across southern mexico, the yucatan peninsula, belize, most of guatemala, and parts of el salvador and honduras. their cities were large with populations of 10,000 or more. one of the most important cities was tikal, which had a population of over 60,000. they worshiped various gods such as the sun-god and the rain-god. they developed a system of writing using a series of glyphs, or pictures that stood for sounds. they possessed advanced knowledge of astronomy and mathematics and understood the concept of zero.

The whigs selected william henry harrison to run against president van buren. in the campaign, the whigs compared harrison to , who grew up on the frontier in a. this became a of the 1840 campaign, even though harrison was a wealthy man. harrison was also a war . the whigs' campaign slogan used harrison's victory at , a battle in the war of 1812, and , his vice presidential running mate. in the campaign, the whigs blamed for the depression that followed the panic of 1837. many voters participated in the election, and became the first whig president. when harrison died, tyler became president. tyler had once been a. he didn't always agree with the of his own party, and the party expelled him

The maps below show the middle east. which best explains how the green areas depicted in the image on the left are reflected in the population map on the right? populations are greater in fertile areas that are close to freshwater sources, which is why more people live near deserts. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near oceans. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near mountains. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near rivers. plz hurry in test only have 34 mins left

One day as your professor is driving to work, another driver runs through a red light and hits his car. the professor is shaken up but survives the accident. however, the next time he starts to enter the intersection,he becomes nervous and fearful. soon,he starts going to work via another route to avoid the intersection even though this route adds twenty minutes to his commute in each direction. according to the principles of classical conditioning, why does the professor become scared of the previously harmless intersection? what can he do about this, as going via other route is very time consuming? be specific. break down the situation into its parts and show how the principles of learning apply.