The Aztecs are missing a piece of their Sun Stone. Go to 1877 AD and climb to the roof of Thomas Edison's house: you can get there by pressing the starter of the motorcar at the far left -- it will drive across to the right and you can climb up onto the tree there. The Sun Stone piece is in the second chimney.
The gunpowder is in China (1593 AD), by the wall to the right.
It is at 1593 AD on the time device (6 o'clock position).
Get the gunpowder from the Great Wall (1593 AD) and then click on the rocks.
To the far right in The Great Wall of China (1593 AD)
The Great Wall of China is at 1593 AD, which is 6 o'clock on the time device. (see related question)
at 1593 ad to the right
The cave rocks can be blasted away with the barrel of gunpowder from the Great Wall of China (1593 AD, 6 o'clock on the time device).
To blast open the cave at 831 AD (Vikings), you need the barrel of gunpowder found at the right side of the Great Wall of China (1593 AD).
It is in the cave where there are vikings. In 831 AD. You need to get the gun powder from 1593 AD.
The Stone Bowl you find at Lewis and Clark's camp in 1805 AD goes to the Great Wall of China (6 o'clock, 1593 AD).
Be sure to leave any of the "challenges" on Time Tangled Island. If the time device still doesn't show up, reboot Poptropica to see if it will set you back to the start of 1593 AD.
all of them,they need help,they are all in a tangled mess,thous making it time tangled island