Yes
They were the same thing. Medieval means of the Middle Ages.
There was a certain overlap between the Middle Ages and the Renaissance, particularly in Italy, where the Renaissance began about a hundred years before the Middle Ages ended. So there was a point when they were the same. Fashions change, however, and this was especially true in both the Late Middle Ages and the Renaissance. Apart from that bit of overlap, clothing of the Renaissance and the Middle Ages were different.
The same amount of time as the rest of the world's middle ages - about 900 years.
Most people who talk of Roman times are referring to the period of the Roman Empire ending with the fall of the West Roman Empire in the 5th century. This happened before the Middle Ages began. The word medieval means the same as Middle Ages, so the early medieval times are the same as the Early Middle Ages, but that is only part of the Middle Ages.
Yes, it is the same.
litter on the streets
yes
No. The Middle Ages is the period of Western European history from 500 - 1500 A.D. The Crusades were a series of invasions of the Middle East by Europeans, instigated by various Popes during the Middle Ages.
The Middle Ages and medieval times are the same thing. The word medieval is defined as the adjectival form for Middle Ages, and comes from Latin words meaning middle ages. One thing to remember, however, is that while a given historian usually does not distinguish between the meanings of the two terms, historians disagree with each other about the dates of the period. So one historian might say the terms Middle Ages and medieval times both refer to the times from 476 to 1453, and another might say they both terms refer to the times from from 1066 to 1485. There is a link below to an article on the Middle Ages.
Humans same as today.
Middle ages and medieval are the same, just different terms for the same time frame. Yes, the long bow was used.
The same as today.