Art history: mortar was a combination of sand, lime and water used as a bonding agent in ashlar masonry (a type of construction that mostly uses rectangular blocks of stone). it was a very common in the acient world. what was the major contribuution the romans mande to the montar recipe, how did it improve builing?its due !

it was petrified wood that was used and mixed with the sand and water which turned it into a hard stone type substance

Explanation: was used in the stone age

i just answered it

explanation:

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.