One of these subsequent events is organogensis, which gastrulation makes possible by allowing the different germ layers to differentiate into major body tissues and form functioning organs. The germ layers that are established during gastrulation are the endoderm, mesoderm, and ectoderm.
Eilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.The island is dominated by its famous picturesque castle.ilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.
In the campaign and Battle of Belvoir Castle (Kaukab al-Hawa), a Crusader force led by King Baldwin IV of Jerusalem sparred inconclusively with an Ayyubid army from Egypt commanded by Saladin.Saladin had seized control of Egypt in 1169 and established the Ayyubid Sultanate soon after.he security of the Crusader Kingdom of Jerusalem in the twelfth century was dependent upon a network of fortifications, mainly along its eastern border which was vulnerable to Muslim attacks. The Hospitaller castle of Belvoir was one of these. It is the first datable true concentric castle.