How did mr. and mrs. christie get their land in ireland

Why is it useful for historians to base certain studies on the analysis of historical periods

Examine these two paintings that depict famous events from american history. the image on the left, painted in 1940, shows the signing of the u.s. constitution in 1787. the image on the right, painted in 1836, shows the american victory at the battle of yorktown in 1781.which of these paintings should be considered a secondary source?

What role did the alliance system play in preventing austria-hungary and serbia from coming to a compromise settlement?