One of the most significant challenges is building an airplane had to do with "propulsion", since the technology that allowed motors to have enough energy to lift an airplane into the sky with a passenger wasn't available for most of history.

8 0

2 years ago

Of all of the years and areas of ancient world history studied this semester, which time in history would you have most liked to

miv72 [106K]

Answer:

The Greek and Roman Era

Explanation:

7 0

2 years ago

Which of the following was a reason why cash crops in early America were profitable? A. They were sold in different areas of the

balu736 [363]

The answer is either a or b<span />

6 0

2 years ago

Read 2 more answers

Please help! Number 10 and 11!

Advocard [28]

Answer:

1. Polio

2. All of the above

Explanation:

hope this helps

From,

1kvibing

4 0

2 years ago