Mary migrated to the USA. Before she left Guyana she gave her son Mark and his wife Margaret $5,000,000. to buy a house-lot for her. They bought it and had in conveyed into their names. Mary then sent them money to build a small house on the land. Mark and Margaret used the money to build a small house on the land. Mark and Margaret then moved into the small hours eon the land. Mary had promised to sponsor Mark and Margaret to America, but she then decided to sponsor her other child Morris first. Mark and Margaret were angry about this. When Mary came home for Christmas that year they did not allow her onto the property and told her it was their own. Mary has filed an action asking the court to declare the property is hers.

Argue for and against using authorities.