1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jok3333 [9.3K]
4 years ago
10

How many years did it take the modern engineers to figure out how the roman concrete was made out of?

History
1 answer:
jolli1 [7]4 years ago
6 0
Took engineers years to figure out that Ancient Romans used volcanic ash in a mortar with lime stone.
You might be interested in
Pueblo settlements set up by the Spanish in New Spain served as?
jeka57 [31]

Answer:

Trading posts and central government centers

8 0
3 years ago
What is a troubadour
Crank
Troubadour is a french medieval lyric poet composing & singing in provencal in the 11th & 13th centuries.
6 0
4 years ago
Which two men worked for the advancement of African Americans?
ANTONII [103]
Hey are you in agora too :) and that would be w.e.b dubois and booker t washington
3 0
3 years ago
Why did Africans resent colonial rule?
natta225 [31]

The complexity of Africans' political relationships among themselves, then, influenced the nature of their resistance to colonial rule. As they resisted European invasions, they confronted both European and African soldiers. ... The power was European, but the face of it on the local level was often African.

7 0
3 years ago
What are some advantages to a traditional economic system?what are some disadvantages?
IRINA_888 [86]
An advantage in a traditional economy people only have one job. This makes it easier to know what you'll do. A disadvantage would be that there isn't much room for advancements. There most likely won't be new inventions or discoveries. 
5 0
4 years ago
Read 2 more answers
Other questions:
  • Descriptive writing includes specific details that simulate the readers senses true or false?
    10·2 answers
  • How did Kennedy hope to avoid violence and discrimination?
    14·1 answer
  • List at least three characteristics of society before the renaissance
    9·2 answers
  • How did geography influence where ancient Egypt lived
    15·1 answer
  • Why was the Caribbean called the "Great American Lake" in this time period?
    8·2 answers
  • The people of one country have decided they no longer wish to have individual state governments. They all basically have the sam
    14·1 answer
  • Do any one know anything I have lots of points to give please help me with these answers I all of them
    10·1 answer
  • Pleaseee helpppp<br> will mark BRAINLIEST!!
    7·2 answers
  • Al Qaeda is identified as an international terrorist group because it
    11·2 answers
  • Which activities took place in Catholic missions in Texas during the eighteenth century?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!