The hammer and sickle were used in the middle ages for a variety of different tasks. Both items were used to pound things into the ground and to cut grain.
YES
the middle ages
According to Wikipedia, a sickle blade is a hand-held curved blade farmers used to use to harvest crops before any modern machinery was available. I looked on Wikipedia and if you want to see a picture of it, just type in "sickle." The sickle was also depicted on the flag of the USSR along with a hammer. Hope that helps.
The predominant staircase design in the Middle Ages was the spiral design for stairs. Spiral stairs were used from the medieval ages and are still used in many modern houses.
The three main weapons used in middle ages battles in Europe were swords, maces and English longbows
war hammer
The hammer and sickle symbol was created during the Russian Revolution in a contest held to create a Soviet emblem. The hammer and sickle signifies the socialist alliance of the industrial working class and the peasants. Yevgeny Ivanovich Kamzolkin won the contest with his entry:
The hammer and sickle symbolize the unity of the workers (hammer) and farmers (sickle) in the Soviet Union, representing the communist ideology of working together for a classless society. It was widely used on the flag and emblems of the Soviet Union and communist parties around the world.
building in ancient ages
Castles in the Middle Ages were used to keep out enemies.
See the question: What are some weapons used in the middle ages?
In the Middle Ages
None. The symbol didn't even exist until the twentieth century.
people in the middle ages used letters or talking to face to face
because they used wood smoke as a deorderant in the middle ages
They were used by the Supreme Soviet as a reflection of the proletarian ideology they supposedly adhered to (although not so much in practice). Marx believed that the workers (represented by the tools they used - the hammer and sickle) would one day rise up and seize the means of production, and from this would gain control and create a worldwide single Communist state.
YES