Does the sentence "In this way natural history spread many of the scientific developments of the time, but also provided a new source of legitimacy for the dominant class." provide a valid answer to the question "The idea of what quality was a social indicator that provided a new source of legitimacy for the dominant class?"

A: no

Does the sentence "It is believed that the area was on the route out of Africa that some scholars suggest was used by early humans to colonize the rest of the Old World." provide a valid answer to the question "How old were the obsidian tools that were discovered by the Eritrean Research Project Team?"

A: no

Does the sentence "Asphalt/bitumen was also used for flooring, paving and waterproofing of baths and swimming pools during the early 20th century, following similar trends in Europe." provide a valid answer to the question "For what purpose was asphalt used in swimming pools and baths?"

A: yes

Does the sentence "A century later, when the Treaty of Lausanne was signed between Greece and Turkey in 1923, the two countries agreed to use religion as the determinant for ethnic identity for the purposes of population exchange, although most of the Greeks displaced (over a million of the total 1.5 million) had already been driven out by the time the agreement was signed.[note 1]" provide a valid answer to the question "When was the Greece that we know today officially formed ?"

A:
no