Historically, this group has been required to wear distinctive clothing to indicate their race:
athletes
gypsies
jews
germans

I believe the answer is: Jews

This practice is widely used in the 13th century.

During this period, Jewish people wear cape with yellow ring decoration in order to distinguish people in their race with another. This tradition started to dissapear as we enter the 14th century.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.